Question

find the value of √7-1 upon √7+1 minus √7+1 upon √7-1 = a+b√7

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Answer 1

Answer:

4$\sqrt 7$/49

Step-by-step explanation:

root7+ 1 / root7- 1  -  root7- 1 / root7+ 1

{multiply root7+ 1 / root7- 1 by  root7+ 1 } and

{multiply root7- 1 / root7+ 1 by  root7- 1}

u will find the answer