Multiply:
$8 a b^{2}$ by $- 4 a^{3} b^{4}$ .

- 32 a^{4} b^{7}

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- 32 a^{4} b^{6}

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- 32 a^{4} b^{5}

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- 32 a^{5} b^{6}

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Solution

The correct option is B $- 32 a^{4} b^{6}$
$8 a b^{2} \times (- 4 a^{3} b^{4})$
$= 8 \times (- 4) a^{1 + 3} b^{2 + 4}$
$= - 32 a^{4} b^{6}$

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