Respuesta :
Answer:
-12x^3+28x^2
Step-by-step explanation:
-4x3= -12
-4x-7= 28
x^2+x= x^3
Then, x^2 just transfers over beside 28.
Answer:
-12x^3+28x^2
Step-by-step explanation:
-4x3= -12
-4x-7= 28
x^2+x= x^3
Then, x^2 just transfers over beside 28.