Bonjour,
aire ABCD = aire ARMU + aire RBSM + aire MSCT + aire MTDU
= x² + 3x + 6 + 2x
= x² + 5x + 6
aire ABCD = aire ABSU + aire USCD
= x(x+3) + 2(x+3)
= x² + 3x + 2x + 6
= x² + 5x + 6
aire ABCD = aire ARTD + aire RBCT
= x(x+2) + 3(x+2)
= x² + 2x + 3x + 6
= x² + 5x + 6
aire ABCD = AB × BC
= (x+3)(x+2)
= x² + 2x + 3x + 6
= x² + 5x + 6
