( 0,75 x ^ { 4 } - \frac { 1 } { 4 } x y ^ { 3 } + x ^ { 3 } y + 0,25 x ^ { 4 } ) \cdot ( x ^ { 3 } y - \frac { 3 } { 4 } y ^ { 4 } - \frac { 1 } { 4 } x ^ { 4 } + 4 x y ^ { 3 } )
Evaluate
\frac{x\left(4x^{3}-y^{3}+4yx^{2}\right)\left(4yx^{3}-3y^{4}+16xy^{3}-x^{4}\right)}{16}
Expand
3\left(xy\right)^{4}+y^{2}x^{6}-x^{2}y^{6}+\frac{65y^{3}x^{5}}{16}-\frac{3x^{3}y^{5}}{4}+\frac{3xy^{7}}{16}+\frac{3yx^{7}}{4}-\frac{x^{8}}{4}
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