Respuesta :
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
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