(0,5х-2у)³= (0,5х)³-3•(0,5х)²•2у+3•0,5х•(2у)²- (2у)³=0,125х³-1,5х²у+ 6ху²-8у³
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(0,5х-2у)³= (0,5х)³-3•(0,5х)²•2у+3•0,5х•(2у)²- (2у)³=0,125х³-1,5х²у+ 6ху²-8у³