August 2018 1 19 Report
Zapisz w jak najprostrzej postaci:
a.[x+1][x-2]+[x+2][x-1]
b.[5k+n][k-2n]-k[4k+n]
c.[4y+3][y-2]-2y[4-2y]
d.-[3c-2][c-1]-c[c-2]
e.2[3a²-1]-[a+2][a+2]
f.5x²[x²+1]-[x²-2][x²+3]

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