a) (q²-8) ³=q6-24 q⁴+192q²-512
b) (q- y²) ³=q³-3q²y²+3q y⁴-y6
c) (b²-5y) ³=b6-15b⁴y+75b²y²-125y³
d) (5d-a²) ³=125d³-75a²d²+15a⁴d-a6
