What is the product of $(a + b)$ and 7 $a^{2}$ $b^{2}$ ?

7 $a^{2}$ $b^{2}$

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7 $a^{3}$ $b^{2}$ + 7 $a^{2}$ $b^{3}$

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7 $a^{2}$ b + 7a $b^{2}$

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7ab + 7 $a^{2}$ $b^{2}$

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Solution

The correct option is B
7 $a^{3}$ $b^{2}$ + 7 $a^{2}$ $b^{3}$

Using distributive property,

7 $a^{2}$ $b^{2}$ $(a + b)$ = 7 $a^{3}$ $b^{2}$ + 7 $a^{2}$ $b^{3}$ .

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