Question

(x+2)(x-7)+(x-5)(x+3)

Qual seria a solução ?

Answer 1

(x+2)(x-7)+(x-5)(x+3)  =  x2+(2+(-7))x+2.(-7) + x2+(-5+3)x+3.(-5)  =

x2-5x-14+ x2-2x-15  =  2x2-7x-29