Uprav výraz \left(2 x^{2}-x y+3\right) \cdot 2 x^{2} y.
=4x^4y-2x^3y^2+6x^2y
=4x^4-2x^3y^2+6x^2y
=4x^4y-2x^3y^2+6x^2
=4x^4y-2x^3y^2+6xy