Je sais que cest facile mais vu que moi est et les maths sa fait 2 question :Reduire chaque expressions suivantes:
A=x6-5x²-30-x
B=12x-x²-10+x-3-8x²+1-2x
C= -3-a+b+5a-9+(-3a-5b)
D=x²-(3x²-15x+4)+(15x²-12x²-x)
merci je vais surement vous poser d'autres questions a propos des maths mdr merci a tout bisous
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