Bonjour,
Ex. 56 :
11+2(x-6)+4(-3x-6) = 11+2x-12-12x-24 = -10x-25
-2(x-5)-3(7-4x) = -2x+10-21+12x = 10x-11
8+2y-5(2y-6)+4 = 8+2y-10y+30+4 = -8y+42
-7y-4(3y-6)+3+2(3y-7) = -7y-12y+24+3+6y-14 = -13y+13
-5z+5z(z-3)-7(6-8z) = -5z+5z²-15z-42+56z = 5z²+36z-42
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Bonjour,
Ex. 56 :
11+2(x-6)+4(-3x-6) = 11+2x-12-12x-24 = -10x-25
-2(x-5)-3(7-4x) = -2x+10-21+12x = 10x-11
8+2y-5(2y-6)+4 = 8+2y-10y+30+4 = -8y+42
-7y-4(3y-6)+3+2(3y-7) = -7y-12y+24+3+6y-14 = -13y+13
-5z+5z(z-3)-7(6-8z) = -5z+5z²-15z-42+56z = 5z²+36z-42