exn°13
a. (2x - 3)(x + 2) - 5(2x - 3)
(2x - 3)(x + 2) - 5)
(2x - 3)(x -3)
b. (5x + 1)(3x - 5) - (x - 3)(5x + 1)
(5x + 1)[(3x - 5) - (x - 3)]
(5x + 1)(3x - 5 - x + 3)
(5x + 1)(2x - 2)
vous faite le reste
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exn°13
a. (2x - 3)(x + 2) - 5(2x - 3)
(2x - 3)(x + 2) - 5)
(2x - 3)(x -3)
b. (5x + 1)(3x - 5) - (x - 3)(5x + 1)
(5x + 1)[(3x - 5) - (x - 3)]
(5x + 1)(3x - 5 - x + 3)
(5x + 1)(2x - 2)
vous faite le reste