Find the product of $9 a, 4 a b$ and $- 2 a$

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Solution

Consider the given expression,

$9 a$ , $4 a b$ and $- 2 a$ ,

Now, product of

$9 a, 4 a b$ and $- 2 a$ $= 9 a \times 4 a b (- 2 a) = - 72 a^{3}$ $b$

Hence, this is the answer.

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