1)Développer l'expressions algébrique suivante : A(x) = -2 (3x-5) (x-3) +4 (1-x)²

2)Factoriser les expressions algébriques suivantes : B(x) = (1-7x) (x-1) -2 (x-1)
                                                                                    C(x) = (2x-1) (5-x) + 4x² - 2x
                                                                                    D(x) = (x-1)² -4