Question about Texas Instruments TI-30X Calculator

# How to solve an equation with negative exponent

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• Texas Instru... Master

You probably want to calculate the numerical value of some mathematical expression with numbers raised to negative exponents.
Just enter the expression as you would with positive exponents Except that before entering the value of an exponent press the change sign key, marked (-), or +/- or (+/-). Do not confuse the change sign with the usual minus sign, which is usually displayed bigger then the change sign. Make sure that the (-) is displayed before the value of the exponent. Use parentheses if necessary.

Posted on Feb 14, 2014

• k24674 Feb 14, 2014

If you want to solve equations, this calculator cannot do so.

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Posted on Jan 02, 2017

Press [2nd][,] to activate (EE) which appears on screen as a lower case E, enter the change sign (-) right of the [dot] on the bottom row of keys, enter the value of the exponent.
Ex: Enter Avogadro's number of Generalk Chemistry fame
6.02[SHIFT][,] (EE) (-)23
Here is screen capture of what it will look like.

Posted on Feb 27, 2010

SOURCE: Negative Exponent

2^-4

Posted on Feb 09, 2008

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

Posted on May 05, 2008

SOURCE: Negative exponents?

You entered it correctly. Although you can leave out the parentheses if you want. The calculator will do exponents before it does multiplication or division just like it does multiplication and division before it does addition and subtraction. It has a built in order for hierarchy of operations. You only need to use parentheses if you want to do something that is different from this order. FYI, dividing by a negative exponent is the same as multiplying by a positive exponent. You could enter it in either way. .825/10^-3 = .825*10^3 = 825. I hope this helps you out.

Posted on Dec 02, 2009

SOURCE: I need to use the

I think what you did was use the minus sign instead of the negative sign, on that calculator, the two are not interchangeable. I purposely used the minus sign just now and also got a syntax error, but it looks like it works with the negative sign (-) located under the 3 button.

Posted on May 09, 2011

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## Related Questions:

### Just got a SHARP EL-531X, it won't do simple calculations with scientific notation, It keep saying

To enter the power of 10 with exponent use the Exp key followed by the exponent. If the exponent is negative, you must use the negation key (-) not the - key (for subtraction).
When you press the Exp key you do not type in the 10.

Mar 10, 2012 | Sharp Office Equipment & Supplies

### 825 - (659 - (410 - 360) x 684)= ?

This is a classic use of the old PEMDAS rule. The order of operation goes by Parenthesis, Exponents, Multiplication/Division, Addition/Subtration. Take it step by step to avoid getting mixed up.
The first operation done is (410-360) which = 50. New Equation: 825 - (659 - 50 x 684) = ? The second operation done is 50 * 684 which = 34200 New Equation: 825 - (659 - 34200) = ? The third operation done is 659 - 34200 which = -33541 New Equation: 825 - (-33541) = 825 + 33541 = ? it becomes +33541 because subtracting a negative is the same as adding the positive. The final operation done is 825 + 33541 which = 34366 Your Final Solution Is:
825 - (659 - (410 - 360) * 684) = 34366

May 07, 2011 | Texas Instruments TI-83 Plus Calculator

### How do I find the square root of a number? and how do I enter scientific equations?

For square roots, use the square root key just to the left of the divide key. For example, 4 square-root = will give you 2.

The calculator doesn't have any way to store equations, scientific or otherwise. If you mean scientific notation, use the EE key just above the 7 key to enter exponents. For example, to enter 1.23x10^6, press 1 . 2 3 EE 6. For negative exponents, make sure to use the +- key to the right of the decimal point instead of the - key.

Sep 22, 2010 | Texas Instruments TI-30XA Calculator

### I cannot find the way to make negative powers of ten on this calculator, and also how do I insert brackets into an equation? Thanks if you can help here.

For negative numbers (not just exponents), use the +()- key to the right of the decimal point. For brackets, use the parenthesis keys above the 8 and 9 keys. You can nest more than one set if needed.

Apr 07, 2010 | Texas Instruments TI-30XA Calculator

### Where is the exponent bottom?

the exponent button looks like ^ push that and type in the number. For some equations and also negative numbers you may have to put parentheses.
Ex, 9 * 7^(-5)

Jan 26, 2010 | Texas Instruments TI-36 X Solar Calculator

### How to use negative exponents on a calculator?

Uh yes it will allow you to enter a negative exponent.... press the numbers you want then hit EXP button, then hit the +/- button and then the exponent. 60 % of the time, it works...... everytime.

Sep 20, 2009 | Texas Instruments TI-83 Plus Calculator

### Trying to enter Chemistry equations and it won't work...

the way i enter my equations is a bit different from what you're doing, i use the fraction button to do division problems, i just feel it makes it easier to read.
anyway, the fraction button is on the far left, 3rd button down (it looks like a white box on top of a line, and below the line is another empty box). press that, and you can type 1.0x10^-14 on the numerator.
it seems that you haven't discovered the EXPONENT button. that button is on the same row as the fraction button, it looks like an x with a white box next to it. press that once you've typed out "1.0x10", and then type -14. the negative button btw is below the fraction button, and looks like this: (-)
press the right arrow twice on the circle thingy at the top of all the keys, and that'll advance you to the denominator. type 2.0x10^-5, using that nifty exponent key. press the equal sign and it'll solve it for you, all in scientific notation (the answer is 5x10^-10). the problem with this calculator is, it won't expand that answer for you with all the decimals and everything, but if its chemistry that shouldn't be a problem.
also, you can certainly use the "x10^x" button on the very bottom of the keypad (its next to the decimal button). by using this key, you won't have to press the exponent button since you can just type in the exponent directly next to the 10.

as for that negative log of 5.6, just input the negative, the log button is right next to the exponent button, and your number and yeah....it's that easy :]

i hope you like this caculator, it has so many functions (have you seen the size of the manual??)
good luck on your chemistry test!

Jun 06, 2009 | Casio FX-115ES Scientific Calculator

### Negative numbers

You can get the manual on the link below: http://world.casio.com/calc/download/en/manual/ If I understand your question this from page E-66 may help........

Aug 01, 2007 | Casio FX-115ES Scientific Calculator

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