Question

nao consigo resolver a equação (x+2)elevado a 2 + x=0

Answer 1

(x+2)²+x=0

x²+2.x.2+2²+x=0

x²+4x+4+x=0

x²+5x+4=0

∆=5²-4.1.4
∆=25-16
∆=9

x= -5±√9/2.1
x= -5±3/2
x1=-5+3/2=-2/2=-1
x2=-5-3/2=-8/2=-4

Answer 2

Resposta:

Explicação passo-a-passo:

(x+2)²+x=0

x²+2.x.2+2²+x=0

x²+4x+4+x=0

x²+5x+4=0

∆=5²-4.1.4

∆=25-16

∆=9

x= -5±√9/2.1

x= -5±3/2

x1=-5+3/2=-2/2=-1

x2=-5-3/2=-8/2=-4