Question about Texas Instruments TI-30X-IISTK Scientific Calculator

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When i square a negative, i get a negative answer, how do i fix it so it gives me the positive number?

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Actually, you're negating a square, not squaring a negative. When you put in -x^2, it's getting calculated as -(x^2). In order to square a negative number, use parentheses and calculate it as (-x)^2.

Also, make sure you're using the +- key to the right of th decimal point instead of the - key when entering the negative number.

Posted on Oct 01, 2010

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How do I calculate the standard deviation of a group of numbers containing both positive and negative numbers. Simply putting the neg symbol before or after entering the neg number does not give the...


Don't you need to find the distance from the mean and then square it. So for example, if the mean is 10 and the number that you dealing with is negative 15, on your calculator you would enter 10 - (-15) and hit enter and get 25.

Good luck.

Paul

Mar 15, 2015 | Office Equipment & Supplies

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My TI84 plus silver edition calculator is giving me an incorrect sign whenever I do an exponential function. When I type in -25^2, it gives me -625 instead of 625. How do I fix this?


It's giving you the correct answer. It's calculating the negative of 25 squared. 25 squared is 625, and the negative of that is -625.

If you want to calculate the square of negative 25, you need to tell the calculator that.

Press ( (-) 2 5 ) ^ 2 ENTER .

Sep 05, 2011 | Texas Instruments Office Equipment &...

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When I punch (-2) to be squared I get a negative number instead of a positive number


You must enclose the negative number between parentheses. (-15)^2 will give 225 because it is the whole content of the parentheses that is squared. However if you write -15^2 the result is -225.Check the key stokes.

Jun 02, 2011 | Texas Instruments TI-30XA Calculator

1 Answer

Why is it that when I put in negative numbers squared, the answer comes out negative? EX: -105 ^ 2 = -11025 The above is what my calculator states (which is clearly wrong because it shouldn't be...


If you're pressing the keys
(-) 1 0 5 ^ 2 ENTER
then you're not squaring a negative number, you're negating a square. This sequence of keystrokes calculates -(105^2), and -11025 is the correct answer for this.

Since the ^ operator binds more tightly than the (-) operator, you need to tell the calculator you want to override the order of operations, just as you would if you wanted an addition done before a multiplication. Press
( (-) 1 0 5 ) ^ 2 ENTER and you will see the expected result.

Jan 23, 2011 | Texas Instruments TI-83 Plus Calculator

1 Answer

When I square a negative number (eg -2^2) it gives me a negative answer (-4) why isn't it giving me a positive answer?


You're not squaring a negative number, you're negating a square. What you need to do is calculate (-2)^2 instead of the -(2^2) you're now calculating.

Feb 04, 2010 | Texas Instruments TI-83 Plus Calculator

1 Answer

Hi, i have a casio fx-82au plus, and it gives me the wrong answer when i press -X^2(X is any number. it'll give me -X. how can i fix this??


If you want to square a negative number, you should enclose it in parentheses then raise it to the 2nd power.
-5^2 =-25 .Priority to squaring ahead of negating
(-5)^2=25 .Priority to parentheses before squaring

Jan 28, 2010 | Casio FX-115ES Scientific Calculator

1 Answer

I am tutoring a student who uses the Casio fx-300MS. A problem required that he raise (-2) to the 4th power, and the calculator indicated the answer was -16. I know that the answer should be a positive 16,...


Enclose any negative number between parentheses before squaring.
If you enter -4^2, where - is the negation, the result will be -16 because of the priority rules: exponentiation (power) has priority over negation.
If you enter (-4)^2 the result will be 16, because parentheses have priority over the squaring: the 4 is negated then the result is squared.

Dec 30, 2009 | Casio FX-300MS Calculator

1 Answer

Okay... my Ti-89 isn't squaring numbers right. I put in -2^2 and I get -4, or I put -3^2 and I get -9 and so forth. I thought and still believe that when you square any number, despite whether it's...


Hello,
You are not using the right syntax. It has to do with priority of operations. raising a number to a power has priority over the negation sign (the change sign key). Th operations you are performing are treated as follows.
1. The square of 2 is calculated first (4),
2. then the negation (change sign) is performed, giving -4.

To get what you intend, namely the square of a negative number, you should enter the calculation as follows.
(-2)^2.
Since the parentheses have priority over everything else, the negation of 2 is calculated first, giving -2, then the power is performed next, and the result should be 4

If you need convincing, here is a screen capture.

e928077.jpg

Hope it helps.

Oct 26, 2009 | Texas Instruments TI-89 Calculator

1 Answer

Wrong answer with squared negatives.


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!

Nov 12, 2008 | Texas Instruments TI-83 Plus Calculator

1 Answer

Negative answer when squaring a neg number


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

Apr 20, 2008 | Texas Instruments TI-85 Calculator

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