Question

.
x² – 8x =9
Select each correct answer.

Answer 1

x=9, -1.

Explanation:

x^2-8x=9

x^2-8x-9=0

factor out the trinomial

(x-9)(x+1)=0

zero property,

x-9=0, x+1=0

x=0+9=9

x=0-1=-1