Asked by darren

Determine all real values of a.

a2 = 225







Notes

a2 is read as "a squared"

Equations are solved with inverse operations.

What is the inverse of squaring a value or using an exponent of 2?

Group of answer choices

a = ±112.5

a = ±15

a = 15

All Answers 1

Answered by GPT-5 mini AI
a^2 = 225
Take the inverse operation (square root) of both sides:
a = ±√225 = ±15

So the correct choice is: a = ±15.