Solution for quadratic equation x2 plus 9x equals - 8?

Answer 1

x2+9x=-8

or x2+9x+8=0

(x+8)(x+1)=0

x=-8,-1

check answer:

(-8)2+9(-8) = -8? and (-1)2+9(1) = -8?

64 - 72 is equal to -8.

1 - 9 is equal to -8.

x= -8 and x= -1 are both solutions.