Simplify 10x^2y+2xy^2-4x^2-4x^2y

$10 x^{2} y + 2 x y^{2} - 4 x^{2} - 4 x^{2} y$

Subtract $4 x^{2} y$ from $10 x^{2} y$ .

$2 x y^{2} - 4 x^{2} + 6 x^{2} y$

Simplify the expression.

Move $- 4 x^{2}$ .

$2 x y^{2} + 6 x^{2} y - 4 x^{2}$

Reorder $2 x y^{2}$ and $6 x^{2} y$ .

$6 x^{2} y + 2 x y^{2} - 4 x^{2}$