September 2018 3 7 Report
2.Zredukuj wyrazy podobne :

a) b+a+r+b+a+p+a+p+a
b) b-a-r-b-a-p-a-p-a
c) a+2b+3c-4c-5b-6a
d)a³+2a-a²+3a²-10a³+5
e)5x²-x²+y²+y-3-y+(-2)y²+5
f) 13x+7y-10x-4y+5y
g)90x+3y-x²-9*9x-2y+x²
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