Question

Resolva a função do 2 grau
B) -x^2-6x+16=0

Answer 1

-x²-6x+16=0
∆= b²-4ac
∆=(-6)²-4.(-1).16=
∆=36 + 64= 100

x= -b ± √∆/2a=

x¹= -(-6)+√100/2.(-1)= 6+10/-2 = 16/-2 = -8

x²= -(-6)-√100/2.(-1)= 6-10/-2 = -4/-2 = 2

(x¹=-8; x²=2)