Question

please solve Q11....... plzz

Answer 1

HELLO!!!
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GIVEN : x^2+1/x^2 = 79
We have to find: x+1/x
HERE IS UR ANSWER⬇️⬇️
=>x^2+1/x^2 = 79
=>(x+1/x)^2 = 79
=> x^2+1/x^2 + 2 = 79 [(a+b)^2 = a^2 + b^2 + 2ab]
=> x^2+1/x^2 = 81
=> x+1/x = root 81
=> x+1/x = 9

SO,x +1/x = 9✔✔
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HOPE IT HELPS U✌✌