Determine a and b if 7+√5/7-√5 - 7-√5/7+√5 =a+7√5 – InterviewSolution

1.	Determine a and b if 7+√5/7-√5 - 7-√5/7+√5 =a+7√5
Answer» ANSWERA+ 117 5 B= 7− 5 7+ 5 − 7+ 5 7− 5 = (7+ 5 )(7− 5 )(7+ 5 ) 2 −(7− 5 ) 2 = 49−549+5+14 5 −49−5+14 5 = 4428 5 = 117 5 a+ 117 5 b=0+ 117 5 (1)⟹a=0,b=1

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