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Substitution

Question 83 v...

Question

Question 83 (v)

Multiply the following :

$- 3 x^{2} y, (5 y - x y)$

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Solution

We have, $- 3 x^{2} y$ and $5 y - x y$
$∴ - 3 x^{2} y \times (5 y - x y) = - 3 x^{2} y \times 5 y + 3 x^{2} y \times x y = - 15 x^{2} y^{2} + 3 x^{3} y^{2}$

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Question 83 (v)

Multiply the following :

$- 3 x^{2} y, (5 y - x y)$

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Multiply the following :

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