Respuesta :
Answer:
x^2+3x-28
Step-by-step explanation:
(x+7)(x-4) multiply the parentheses
x^2-4x+7x-28 combine like terms
x^2+3x-28
Answer:
x^2+3x-28
Step-by-step explanation:
(x+7)(x-4) multiply the parentheses
x^2-4x+7x-28 combine like terms
x^2+3x-28