Pouvez vous m'aidez ! 1) resoudre l'equation :
5y+2=8y+3

2) Factoriser
C= (y+1)(y-2)+5(y+1)

3)-2 est il solution de l'equation :
y²+3y-6=4?

4) Développer et reduire
B=4(3-2y)-(9-y)
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