The sum of $- 7 x y^{2}$ and $- 2 x y^{2}$ is

- 9 x y^{2}

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- 5 x y^{2}

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5 x y^{2}

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11 x y^{2}

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Solution

The correct option is A $- 9 x y^{2}$
$(- 7 x y^{2}) + (- 2 x y^{2}) = - 7 x y^{2} - 2 x y^{2} = - 9 x y^{2}$

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