October 2018 2 23 Report

Oblicz wartości liczbowe wyrażeń:

a) 3(x-5+y-xy)+5x(y-4x+5xy) =

b) -3x(x+y)+5(x-y)-4y(-x+y) =

c) x(x-3)-(2x+5)-x(x+4) =

d) -3y(x+1)+(y-x)+2x(xy+y) =


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