5a²b(x-y)³-30ab²(y-x)²
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5a²b(x-y)³-30ab²(y-x)²
5a²b(x-y)³-30ab²(y-x)²
5a²b(x-y)³-30ab²(y-x)²
5a²b(x-y)³-30ab²(y-x)²
=5a²b(x-y)³-30ab²(x-y)²
=5ab(x-y)[a-6(x-y)]
=5ab(x-y)(a-6x+6y)
5a²b(x-y)³-30ab²(y-x)²
=5a²b(x-y)³-30ab²(x-y)²
=5ab(x-y)²(ax-ay-6b)