Respuesta :

x(x-7) + 4(x-7)
x^2 - 7x + 4x -28
= x^2 - 3x - 28
lizmenchaca
answer: ^2-3−28

explanation:

(+4)(x-7)

(−7)+4(− 7)

^2−7x+4(x-7)

^2-7+4-28

= ^2-3-28