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b)3(x+2y-6)=3x+6y-18
c)-2(x+4-y+z)=-2x-8+2y-2z
d)x(2y-54)=2yx-54x
e)x(2x²-x+7)=2x³-x²+7x
f)a(b+a-ab)=ab+a²+a²b
licze na naj
3x+6y-18
-2x-8+2y-2z
2xy-54x
2x³-x²+7x
ab+a²-a²b
3x+6y-18
-2x-8+2y-2z
2xy-108
2x³-x²+7x
ab+aa-ab