Question

find the value of
$( {5}^{2} - {4}^{2} ) \div (\frac{1}{9 } {}^{3} )$
​

Answer 1

=81

Step-by-step explanation:

$(5 {}^{2} - 4 {}^{2} ) \div ( \frac{1 {}^{3} }{9 } )$

$25 - 16 \div \frac{1}{9}$

$9 \div \frac{1}{9}$

Reciprocal 9/1

$9 \times \frac{9}{1} = 9 \times 9$

$= 81$

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