Question

Va rog cat mai repede DACA A= (x+1)(x-2) si B=(x-2)(x+3),calculeaza B-A

Answer 1

Răspuns:

A=x^2-2x+x-2

A=x^2-x-2

B=x^2+3x-2x+6

B=x^2+x+6

B-A=x^2+x+6-(x^2-x-2)

B-A=x^2+x+6-x^2+x+2

B-A=2x+8