Question

2x²+4x+2
--------------
X+1

Answer 1

a= 2
b= 4
c= 2

Delta = b² - 4.a.c
4² - 4 x 2 x 2
16 - 16
256
raiz  = 16

-4 +ou- 16 / 4
x¹ = -4 + 16/4 = 3
x² = -4 - 16/4 = 5

então

X+1 = 3+1 ou 3+5

S{ 4 ; 8 }