Find the product of $(6 x - 4 y^{2})$ $(7 x y)$ .

42 x y^{2} - 28 x y^{3}

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21 x y^{2} - 14 x y^{3}

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42 x^{2} y - 28 x y^{3}

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21 x^{2} y - 14 x y^{3}

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Solution

The correct option is C $42 x^{2} y - 28 x y^{3}$
$(6 x - 4 y^{2})$ $(7 x y)$
$= (7 x y) \times (6 x) + (7 x y) \times (- 4 y^{2})$
$= 42 x^{2} y - 28 x y^{3}$

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