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Question

If, a+1a=6 then, a 1a=

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Solution

Given,
a+ 1a =6
by squaring both side
(a+1a)2=(6)2

a2+1a2+2a1a=36

a2+1a2+2=36

a2+1a2=34

a2+1a22=342

a2+1a22a1a=32

(a1a)2=32

a 1a= 32

a 1a= 42


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