Réponse:
A =2x(5x-8)+5x
A=10xcarré- 16x+5x
A=10xcarré - 11x
B=(7x-3)(3x+4)+6x(2x+5)
B=21xcarré+28x-9x-12x+12xcarré+30x
B=33xcarré+37x
C=(6x+5)(2x+7)+(2x+5)(7x-4)
C=12xcarré+42x+10x+35+14xcarré-8x+35x-20
C=26xcarré+79x+70
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Réponse:
A =2x(5x-8)+5x
A=10xcarré- 16x+5x
A=10xcarré - 11x
B=(7x-3)(3x+4)+6x(2x+5)
B=21xcarré+28x-9x-12x+12xcarré+30x
B=33xcarré+37x
C=(6x+5)(2x+7)+(2x+5)(7x-4)
C=12xcarré+42x+10x+35+14xcarré-8x+35x-20
C=26xcarré+79x+70