bonjour pouvez m 'aider svp pour developer et reduire
(x-2)(3x+1)
(6-3x)(7x-5)
(-x+3)(x-3)
(-2-3x)(-4-5x)
(x-2)(3x+1)
(6-3x)(7x-5)
(-x+3)(x-3)
(-2-3x)(-4-5x)
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Bonjour !
(x - 2)(3x + 1) = 3x² - 6x + x - 2 = 3x² - 5x - 2
(6 - 3x)(7x - 5) = 42x - 21x² - 30 + 15x = 57x - 21x² - 30
(-x + 3)(x - 3) = -x² + 3x + 3x - 9 = -x² + 6x - 9
(-2 - 3x)(-4 - 5x) = 8 + 12x + 10x + 15x² = 8 + 22x + 15x²
J'espère t'avoir aidé. Bon courage !