Question

Simplify
(a)
$t\sqrt{21} \div t \sqrt{7}$
​

Answer 1

Answer:

$t \sqrt{21 } \div t \sqrt{7} \\ = \sqrt{21} = \sqrt{3} \times \sqrt{7} \\ so \\ = \frac{ \sqrt{7} \times \sqrt{3} }{ \sqrt{7} } \\ = \sqrt{3} \\ t = \sqrt{3}$

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