Question

Given (x – 7)2 = 36, select the values of x. x = 13 x = 1 x = –29 x = 42

Answer 1

x = 1, x = 13

Explanation:

(x - 7)² = 36 ( take square root of both sides )

x - 7 = ±
`√(36)` = ± 6 ( add 7 to both sides )

x = 7 ± 6

then

x = 7 - 6 = 1

x = 7 + 6 = 13