Répondre :

4-(6x+1)(x-5)-(8x-2*3x)
=4-(6x²-29x-5)-2x
=-6x²+27x+9
droopette
4-(6x+1)(x-5)-(8x-2*3x)
=4-(6x²-30x+x-5)-8x+6x
=4-6x²+30x-x+5-8x+6x
= -6x²+27x+9

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