Réponses

2013-05-02T18:48:38+02:00

C = (x - 8)(2x + 3) - (4x + 3)²

C = 2x² + 3x - 16x - 24 - 16x² - 24x - 9

C = -14x² -37x - 33

2013-05-02T18:51:22+02:00
C=(x-8)(2x+3)-(4x+3)^2=2x^2+3x-16x-24-(16x^2+24x+9)=2x^2-13x-24-16x^2-24x-9=-14x^2-37x-33