Question
Subtract: $-4 x^2 y-y^3 \text { from } x^3+3 x y^2-x^2 y$
✓
Answer
We have,
$x^3+3 x y^2-x^2 y-\left(-4 x^2 y-y^3\right)$
$=x^3+3 x y^2-x^2 y+4 x^2 y+y^3$
$=x^3+y^3+3 x^2 y+3 x y^2$
$x^3+3 x y^2-x^2 y-\left(-4 x^2 y-y^3\right)$
$=x^3+3 x y^2-x^2 y+4 x^2 y+y^3$
$=x^3+y^3+3 x^2 y+3 x y^2$
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