if x-2y=11 and xy=8 find the value of x³-8y³
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x-2y=11
xy=8
(x-2y)^3=x^3-8y^3-3xy(x-y)
=11^3=x^3-8y^3-3x8x11
=1331=x^3-8y^3-264
=1331+264=x^3-8y^3
=1595=x^3-8y^3
xy=8
(x-2y)^3=x^3-8y^3-3xy(x-y)
=11^3=x^3-8y^3-3x8x11
=1331=x^3-8y^3-264
=1331+264=x^3-8y^3
=1595=x^3-8y^3
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