Développer les expressions. A = x(5x + 1) C = 3x (5x + 2) E = 3(-7x - 3) 5.0 B = 3(2x - 13) D = -4(7-9x) F = -2x (-x-4) SVP J'EN AI VRAIMENT BESOIN MERCI D'AVANCE
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A = x(5x + 1) = 5 x² + x
C = 3x (5x + 2) = 15 x² + 6 x
E = 3(-7x - 3) = -21 x - 9
B = 3(2x - 13) = 6 x - 39
D = -4(7-9x) = - 28 + 36 x
F = -2x (-x-4) = 2 x² + 8 x