Question

(x+2) elevado a 2 +X =
0​

Answer 1

Explicação passo-a-passo:

(x+2)²+x=0

(x+2).(x+2)+x=0

x²+4x+4+x=0

x²+5x+4=0

a=1

b=5

c=4

∆=b²-4.a.c

∆=(5)²-4.(1).(4)

∆=25-16

∆=9

x'=[ -(+5)+√9]/2.(1)

x'=[-5+3]/2

x'=-2/2

x'=-1

x"=[-(+5)-√9]/2.(1)

x"=[-5-3]/2

x"=-8/2

x'=-4

Resposta :

x'=-1 e x"=-4