Question

Solve the equation x2 = 64 for x. A. -32, 32 B. -8, 8 C. 8 D. 32

Answer 1

`x^2=64\to x=\pm√(64)\\\\\boxed{x=-8\ \vee\ x=8}\\\\\text{because}\ (-8)^2=8^2=64`

Answer: B. -8, 8

Answer 2

Here is your answer:

x^2 = 64

8 × 8 = 64

8 ÷ 64 = 8

-8 ÷ -64 = 8

= -8, 8

Therefore the answer is option B "-8, 8."

Hope this helps!

~Nonportrit