Question

resolva as equações de segundo grau x elevado a 2 +8x+16= 0​

Answer 1

Resposta:

2+8x+16=0

8x+18=0

8x=-18

X=2.2

Answer 2

x²+8x+16=0

a=1 b=8 c=16

Δ=b²-4.a.c±

Δ=8²-4.1.16

Δ=64-64

Δ=0

$x = \frac{ - b± \sqrt{Δ} }{2 \times a} \\ x = \frac{ - 8± \sqrt{0} }{2 \times 1} \\ x {}^{1} = \frac{ - 8 + 0}{2} = \frac{ - 8}{2} = - 4 \\ x {}^{2} = \frac{ - 8 - 0}{2} = \frac{ - 8}{2} = - 4$

S={-4}