Question about Texas Instruments TI-85 Calculator

My TI-85 must be in some sort of mode that allows it to do this: when I square a negative number, I get a negative answer. I also get a negative answer with any exponent (including all even exponents). Please help, I want it to properly show me positive answers to a negative number to an even exponent. Thanks!

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

Posted on May 05, 2008

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Posted on Jan 02, 2017

In the top right corner of the screen. There is a button that says 2nd.

Press 2nd then press the button that is four buttons further down on the same row of buttons.

Press 2nd then press the button that is four buttons further down on the same row of buttons.

Nov 24, 2013 | Texas Instruments TI-36 X Solar Calculator

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 =

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

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

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

The square root of a negative number is an imaginary number, and the TI-30XA does not deal with imaginary numbers.

However, the square root of -x is equal to i times the square root of x. So, to calculate the square root of -4, for example, press 4 square_root = and read 2. Thus the square root of -4 is 2i.

However, the square root of -x is equal to i times the square root of x. So, to calculate the square root of -4, for example, press 4 square_root = and read 2. Thus the square root of -4 is 2i.

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

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.

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

Oct 01, 2010 | Texas Instruments TI-30X-IISTK Scientific...

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

If you want the answer in rectangular form, set MODE a+bi and tap ENTER and QUIT. Tap square root sign, tap (-)4 and close the parenthesis and tap ENTER. The answer is shown as 2i.

If you want the answer in polar form, set MODE to re^xi and and DEGREE. Tap ENTER and QUIT. Tap the square root sign, tap (-)4, close the parenthesis, and tap ENTER. The answer shown is 2e^90i. (2 at ninety degrees). If you selected RADIAN mode, the answer would be 2e^1.57i (2 at 1.57 radians; or 2 at pi/2 radians)

If you want the answer in polar form, set MODE to re^xi and and DEGREE. Tap ENTER and QUIT. Tap the square root sign, tap (-)4, close the parenthesis, and tap ENTER. The answer shown is 2e^90i. (2 at ninety degrees). If you selected RADIAN mode, the answer would be 2e^1.57i (2 at 1.57 radians; or 2 at pi/2 radians)

Mar 09, 2009 | Texas Instruments TI-86 Calculator

when you type -2 imagine your calculator doing the equation: -1 x 2. The - sign actually stands for a -1 so when you do -2 squared your calculator is simply following order of operations. It first squares the 2 making it 4, then it multiplies the negative making it -4. In order to get around this you must use parenthese. (-2)^2.

Hope this helped

Hope this helped

Nov 20, 2008 | Texas Instruments TI-83 Plus Silver...

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

The calculator cannot do that natively. There may be a program that you can drop onto your calculator to do it though.

http://www.ticalc.org/pub/85/basic/math/

has a ton of stuff... I saw two programs that sounded like it would do what you wanted... but I don't have an 85 to test it on so sorry if they don't...

Ones I saw are "**alghelp.zip" and "****algef85.zip"**

-Saik0Shinigami

http://www.ticalc.org/pub/85/basic/math/

has a ton of stuff... I saw two programs that sounded like it would do what you wanted... but I don't have an 85 to test it on so sorry if they don't...

Ones I saw are "

-Saik0Shinigami

Dec 08, 2007 | Texas Instruments TI-85 Calculator

Apr 03, 2014 | Texas Instruments TI-85 Calculator

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It seems the calculator needs to have the negative number in parentheses before applying the even power.

no that still gives neg. answers

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