Respuesta :

11qq11

x = -9 and x = 8 when y = 0 is the answer

Answer: x= -9,8

Step-by-step explanation:

x=?

y=0

y=x^2+x-72

0=x^2+x-72

0=(x+9)(x-8)

x+9=0            x-8=0

-9   -9            +8     +8

x= -9                 x=8