Divide ( $63 x^{7} y^{8} z^{3}$ ) by ( $9 x^{5} y^{5} z^{3})$ , then the quotient is

7 x^{2} y^{3}

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9 x^{2} y^{3}

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7 x^{2} y^{3} z

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7 x^{2} y^{3} z^{6}

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Solution

The correct option is A $7 x^{2} y^{3}$
$63 x^{7} y^{8} z^{3} \div 9 x^{5} y^{5} z^{3} = \frac{63 x^{7} y^{8} z^{3}}{9 x^{5} y^{5} z^{3}}$

$= 7 x^{7 - 5} y^{8 - 5} z^{3 - 3}$

$= 7 x^{2} y^{3} z^{0}$

$= 7 x^{2} y^{3}$ ... ( $∵ z^{0} = 1$ )

So, option A is correct.

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