Question

(x+1) elevado a 2 = 9

Answer 1

(x+2)²=9
x²+4x+4=9
x²+4x-5=0

-b/a=-4/1=-4

c/a=-5/1=-5

S{-5,1}

Answer 2

(x + 1) elevado a 2 = 9
x² + 1² = 9
x² = 9 - 1
x = √9 - 1
x = √9 - √1
x = 3 - 1
x = 2