Объяснение:

1)(х-2у)³=х³-6х²у+12ху²-8у³

2)(4х+3у)³=64х³+144х²у+108ху²+27у³

3)(5+у)³=у³+15у²+75у+125

4)(аb+m)³=a³b³+3a²b²m+3abm²+m³

5)(1/3+y²)³=1/27+1/3y²+y⁴+y⁶

6)(1-1/y²)³=(y⁶-3y⁴+3y²-1)/y⁶

7)(1/3+3a)³=1/27+a+9a²+27a³