Question

Multiply the surd        √3(√7 - √3)​

Answer 1

Answer:

Solution-

$= \sqrt{3} ( \sqrt{7} - \sqrt{3} ) \\ \\ = \sqrt{3 } \times \sqrt{7 } - \sqrt{3 } \times \sqrt{3} \\ \\ = ( \sqrt{21 } - 3)$

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Additional Information-

•To multiply the surd =

$a \sqrt{m} \times b \sqrt{n} \\ \\ = a \times b \sqrt{m \times n}$