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Least Common Multiple
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\left(y+1\right)\left(y-1\right)^{2}\left(y^{2}+y+1\right)\left(a^{4}+2a^{3}-a-1\right)
Identify all the factors and their highest power in all expressions. Multiply the highest powers of these factors to get the least common multiple.
a^{4}y^{5}+2a^{3}y^{5}-ay^{5}-y^{5}-y^{3}a^{4}-2a^{3}y^{3}+ay^{3}+y^{3}-y^{2}a^{4}-2y^{2}a^{3}+ay^{2}+y^{2}+a^{4}+2a^{3}-a-1
Expand the expression.