Question

x elevado a 2 mais 8x mais 16 igual a zero

Answer 1

x^2+8x+16=0
delta=b^2-4ac
delta=8^2-4.1.16
delta=64-64
delta=0
x=-b-/+ raiz de delta/2a
x=-8-0/2.1
x=-8/2
x=-4
S={-4}

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=-b+-√Δ/2*a
x=-8+-√0/2*1
x=-8+-0/2
x=8+0/2=8/2=4
Espero ter ajudado!