Question

Determine the solutions to the following equation (x-4)^2=81

Answer 1

x = 13, x = -5

Explanation:

(x-4)^2 = 81

x - 4 =
`√(81)`

x - 4 = -
`√(81)`

simplify them

x = 9 + 4, x = 13

x = -9 + 4, x = -5