Question

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Q:-Find the value of

$\sqrt{a - b}[/tex\ \textless \ br /\ \textgreater \ \ \textless \ br /\ \textgreater \ \ \textless \ br /\ \textgreater \ if [tex]\frac{8 + 3 \sqrt{7} }{8 - 3 \sqrt{7} } - \frac{8 - 3 \sqrt{7} }{8 + 3 \sqrt{7} } = a + b \sqrt{7}$​

Answer 1

Step-by-step explanation:

Hey mate here is your answer in Following pic.

Hope It may help you.

Answer 2

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$( \: 8 \: - \: 3 \sqrt{7} \: )( \: 8 \: + \: 3 \sqrt{7} \: ) \: = \: {8}^{2} - {( 3 \sqrt{7}})^{2}$

⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀$= \: 64 \: - \: 63$

⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀$= \: 1$