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Sagot :

B(x)=4(-5x+3)+3(4x-2)
= -20x+12+12x-6
= -8x+6
[tex]4(-5x+3)+3(4x-2) \\= -20x + 12 + 12x - 6 \\= -8x + 6[/tex]

En espérant t'avoir aidé.

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