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Sagot :

bonjour

puisque persone a répondu

D =(y-9)(3y+2)-(2y-7)(4y-5)

D =3y²+2y-27y-18 -(8y²-10y-28y+35)

D = 3y²-25y-18 - (8y²-38y+35)

D = 3y²-25y-18-8y²+38y-35

D = -5y²+1-53

 

E =4(2x-3) - 5(3x-1)

E =8x-12-13x+5

E  =-7x-7

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