bonjour
3 - ( 5 x + 8) = 3 -5 x - 8 = - 5 x - 5
7 x ( x + 9 ) = 7 x² + 63 x
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bonjour
3 - ( 5 x + 8) = 3 -5 x - 8 = - 5 x - 5
7 x ( x + 9 ) = 7 x² + 63 x