August 2018 2 27 Report
Usun nawiasy i zredukuj wyrazy podobne

a)2x-7-[5x²-3x-(2-4x+x²)]
b)3-x²-[2-2x²-(3x²-2x+1)]
c)4x+3-[x-3x²-(6-3x-x²)]
d)3x²-5x-[1-3x-(2+4x-x²)]

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