Question about Texas Instruments TI-83 Plus Calculator

# How do you square a fraction with a negative number like (3/4)^-2

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Place both the base and the exponent in parentheses

(3/4)^(-2) then press enter. Your answer will be in decimal form at first 1.777...

Press MATH
Select the 1: Fraction option and it will convert your decimal value to the fraction answer of 16/9.

Negative exponents flip the fraction. For instance, (3/4)^(-1) = 4/3. So for (3/4)^(-2) you could just square the numerator and denominator separately to get 9/16, and then flip the fraction to account for the negative. That will give you 16/9.

Posted on Jul 30, 2009

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3/4 * -2/1 = -6/4 = -1.5

Posted on Jul 24, 2009

• maecarla Jul 24, 2009

To square the number multiply it by itself.
-1.5 * -1.5 = +2.25

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Posted on Jan 02, 2017

You're not calculating the square of a negative number, you're calculating the negative of a square. You need to use parenthesis to indicate the square of a negative number.

You're calculating -(3^2), not (-3)^2.

To calculate the latter: ( (-) 3 ) x^2 =

Posted on Dec 05, 2010

You must put all negative numbers in Parenthesis otherwise your calculator is not squaring the negative .

Posted on May 05, 2008

Your calculator will square a number before it applies the negative sign, so what you're actually doing is squaring 2, then applying the - sign to your answer. You need to put the -2 in parenthesis, so (-2)^2. That will give you 4. Hope this helps!

Posted on Nov 12, 2008

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## Related Questions:

### Hai again your support helps me alot can you please differentiate for me between the following -6to the power 2 and -6 to the power 2,& 2 to the power -3 + 1/3 to the power-2

Fixya maths 4 indices

Indices n surds

Hai again your support helps me alot can you please differentiate for me between the following -6to the power 2 and -6 to the power 2,& 2 to the power -3 + 1/3 to the power-2
I need a clarity how to convert these exponents to fractions
Posted by Ncwana Noziphiwo on Apr 03, 2018

https://www.tes.com/teaching-resource/indices-negative-indices-6427219

-62 means a number multiplied by itself twice
So in this case it is -6 x -6 = 36 - since -x- = +
If this was -6-2 the negative power means it's a fractional indice so first make it look like a fraction
1/-62 now it looks like a fraction (inverse) and the power mow looks like a normal square
Coz its still a negative number -6 x -6 = 36
So the answer is now 1/36

So when it is a minus power, first turn it into a fraction, then calculate as normal
Note: every number has a sign, it is either + or minus.
By convention, we always assume it is a plus unless stated otherwise.
To make sure u remember this fact put a plus sign in front of every number if no sign is showing
Its like if u say u have a car, what u really mean is you have 1 car. But u drop the 1 coz everyone takes for granted u meant 1 car, 1 house, 1 friend etc
Every power we assume its + unless otherwise stated.
So when a minus is put in front of the power, its saying make it a fraction first!
Maths is a game and games have rules.
This rule is a minus in front of power (indice) change to fraction form first!
So if it is 2-3 - the power -3 is saying turn it into a fraction first so
1/23 = 1/ 2x2x2 = 1/8
If it had of been 23 notice how no signs shown because we take for granted they r all +
Let's show them
+2+3 since it's a plus 3 we don't need to change it to a fraction and since it is a plus 2
We have +2 x + 2 x +2 and a +x+ x+ = +
2x2x2 = 8
Its easier to just do 23 = multiply the 2 by itself 3 times
2x2x2 = 8
When doing fractions of any type I prefer showing them as being more obviously top/bottom
1
-
2

Format and for that free hand is easier as typing is hard...lol
Ie
Numerator Denominator
When using a number that's a fraction it is better tro enclose it in brackets
As every indice is of the form - numberpower
The number can just as easily be a fractional number like a 1/3
So (1/3)2 is a third multiplied by itself
1/3 x 1/3 = 1x1/3x3 = 1/9
If it was (1/3)-2 then first u must get rid of the minus power by turning it into a fraction
1/(1/3)2
1/1/3 x 1/3
1/1/9
And 1 divided by a ninth =
1 to be cont - tired..lol

Apr 03, 2018 | Homework

### How do I to convert from fraction to radical form on the TI-84

Sorry you cannot do that in any calculator. A fraction is a rational number, a root of any index is GENERALLY an irrational number. Some exceptions do exist, but in general NO.
Square root (9/16) =3/4

Apr 03, 2014 | Texas Instruments TI-89 Calculator

### How to put negative fractional power to BA11 plus calculator or how to solve with formula.

Put the fraction inside parentheses so the division occurs before the power, and use the +/- key instead of the - key to enter a negative number. For example, to calculate 8 raised to the minus one-third, press 8 y^x ( 1 +/- 3 ) =. You should get 0.50.

Oct 14, 2013 | Texas Instruments BA-II Plus Calculator

### My ti-83 stop changing decimals to fraction

The Frac command only works if the number can be expressed as a fraction with no more than three digits in the denominator. Since the square root of 5/9 is an irrational number, it cannot be expressed as a fraction at all. The calculator is telling you that the value cannot be adequately approximated as a fraction with three or fewer digits in the denominator.

Jan 14, 2013 | Texas Instruments TI-83 Plus Calculator

### My ti-83 stop changing decimals to fraction

The Frac command only works if the number can be expressed as a fraction with no more than three digits in the denominator. Since the square root of 5/9 is an irrational number, it cannot be expressed as a fraction at all. The calculator is telling you that the value cannot be adequately approximated as a fraction with three or fewer digits in the denominator.

Jan 14, 2013 | Texas Instruments TI-83 Plus Calculator

### Mixed numbers

If the result is positive, type in the integer part then add the fraction part either with the help of the fraction key or the division key. (I do not think that the TI82 has a fraction key.
If it is anything like the TI3 there is command under MATH >Frac. It should be pressed after you enter the mixed number to keep the result as a fraction.
If the mixed number is negative you enclose the whole number in parentheses. Press the change sign (-) key to negate the result.

Sep 26, 2012 | Texas Instruments TI-82 Calculator

### 3/8-7/2= how do I get the answer I know the answer but want to know hot to get it

You convert the fractions so they have the same denominator (bottom number) then subtract the numerators (top numbers). 7/2 is the same as 28/8 (8 divided by 2 = 4. 4 times 7 = 28, so the equivalent fraction is 28/8. You can check by dividing 8 into 28 = 3 1/2 = 7/2. So, 3/8 - 28/8 = negative 25/8 or 3 1/8.

Sep 24, 2012 | Cars & Trucks

### How do i convert the answer of cos(30) which comes out to 0.8660254038 to a fraction?

I am sorry, my friend, but you are asking the impossible. The reason is that the exact value of cos(30 deg) is equal to square root (3) /2 which cannot be fraction (the square root of 3 is an irrational number).
However, it may be possible for your calculator to give you a result with a radical (3)/ 2 but that is no fraction. (A fraction must have both numerator and denominator as integers).

To get a radical result set the IO mode to MathIO.
Press [SHIFT] [MODE] to open (SETUP) and select [1:MathIO]

Feb 18, 2011 | Casio fx-300ES Calculator

### I am having issues performing a simple function on my TI-30XS calculator. when I square a negative number - I get a negative number as opposed to a positive number?? example -3 - which I specify the...

You're not calculating the square of a negative number, you're calculating the negative of a square. You need to use parenthesis to indicate the square of a negative number.

You're calculating -(3^2), not (-3)^2.

To calculate the latter: ( (-) 3 ) x^2 =

Dec 05, 2010 | Texas Instruments TI-30XA Calculator

### Want to know how to calculate a number raised to a power

Use the general power key marked with X to the y ( look for the image of a key on same line as Power in the screen capture)
You enter a number then press the power key and finally the exponent. If exponent is complicated (fraction, negative or other) enclose the exponent in parentheses.

You aslo have dedicated keys for certain powers and roots (square, square rooot, cube, cubic root)

Jun 09, 2010 | Casio FX-260 Calculator

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