4x+7^2=54

Answer 1

the way you typed it ...
4x+7^2=54
4x + 49 = 54
4x = 5
x = 5/4

if you meant:
(4x+7)^2 = 54
4x + 7 = ± √54
4x = -7 ± √54
x = (-7 ± 3√6)/4