Question

$( x + 1) {2} = x + 7$

Answer 1

(x+1)*2=x+7
2x+2=x+7
2x-x=7-2
x=5

Espero ter ajudado!

Answer 2

Bom dia

(x + 1)² = x + 7

x² + 2x + 1 = x + 7

x² + x - 6 = 0

delta
d² = 25
d = 5

x1 = (-1 + 5)/2 = 2
x2 = (-1- 5)/2 = -3