Solve for x 2x^2 = 128
Answers
-6 and 6
-8 and 8
-32 and 32
-64 and 64

Divide both sides by 2
x^2 = 128/2
Simplify 128/2 to 64
x^2 = 64
Take the square root of both sides;
x = √64
Since 8 * 8 = 64, the square root of 64 is 8
x = -8 and 8
Answer: B -8 and 8