Question

-x²-16x-64=0 equação

Answer 1

a=-1 B=-16 c=-64

∆=b^2-4.a.c
∆=(-16)^2-4.(-1).(-64)
∆=256 - 256
∆=0

x=-b+-√∆/2.a
x=-(-16)+-√0/2.(-1)
x=16+-0/-2

X=16/-2 =-8