Squaring Negative Numbers

9/28/2015

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2 Comments

Concerned

11/19/2017 04:20:14 pm

I have a problem with this video. For the answer to a negative number squared to result in a positive number, the integer has to be in a set of brackets with the exponent on the outside of the brackets. In this video it is written -3^2 and the voice says "negative 3 times negative 3" which is incorrect. See examples below:

(-3)^2 = (-3) x (-3) = +9 (the exponent tells you to repeat everything inside of the brackets!)

but

-3^2 = - 3 x 3 = - 9 (the exponent is only applied to the 3)

Cimberly Smith

12/11/2017 07:01:11 am

I feel you definitely need the parentheses or else you are just squaring the three.

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Squaring Negative Numbers

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