Question

Solve for x. x2 = 64

Answer 1

32 × 2 = 64

Explanation:

x is being multiplied by 2 so it would be half of 64.

Answer 2

x = ± 8

Explanation:

Given

x² = 64 ( take the square root of both sides )

x = ±
`√(64)` = ± 8 ← note plus or minus

[ since 8² = 64 and (- 8)² = 64 ]