(3x-2)(x+5)-9x+4+(3x-2)
= 3x^2 + 15x - 2x - 10 - 9x + 4 + 3x - 2
= 3x^2 + 7x - 8
(3x-2)(x+5)-9x+4+(3x-2)
3(×+4)= ײ -16merci d'avance bonsoir 3 x + 12 = x² - 16 ( 3 x ...
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(3x-2)(x+5)-9x+4+(3x-2)
= 3x^2 + 15x - 2x - 10 - 9x + 4 + 3x - 2
= 3x^2 + 7x - 8
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