Question

How do you combine like terms in `(x ^ { 3} - 10x y + 5y ^ { 2} ) - ( 11x ^ { 3} + 5x y - 11y ^ { 2} )`?

Answer 1

`16y^2-10x^3-15xy`

Explanation:

`(x^3-10xy+5y^2)-(11x^3+5xy-11y^2)`

`:.=x^3-10xy+5y^2-11x^3-5xy+11y^2`

`:.=-10x^3-15xy+16y^2`

`:.=16y^2-10x^3-15xy`