#### (i) x^{2} + xy (1 + y) + y^{3}

#### (ii) y^{2} – xy (1 – x) – x^{3}

**Answer :**

**(i) x**^{2} + xy (1 + y) + y^{3}

^{2}+ xy (1 + y) + y

^{3}

Above question can be written as,

x^{2} + xy + xy^{2} + y^{3}

Take out common in all terms,

x(x + y) + y^{2}(x + y)

(x + y) (x + y^{2})

**(ii) y**^{2} – xy (1 – x) – x^{3}

^{2}– xy (1 – x) – x

^{3}

y^{2} – xy (1 – x) – x^{3}

Above question can be written as,

y^{2} – xy + x^{2}y – x^{3}

Take out common in all terms,

y(y – x) + x^{2} (y – x)

(y – x) (y + x^{2})

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