If x^2+1/x^2=27 , find x+1/x
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Answered by
9
we know !
(x + 1/x)² = x² + 1/x² + 2
(x + 1/x)² = 27 + 2
(x + 1/x)² = 29
taking square roots on both sides
x + 1/x = √29
(x + 1/x)² = x² + 1/x² + 2
(x + 1/x)² = 27 + 2
(x + 1/x)² = 29
taking square roots on both sides
x + 1/x = √29
Answered by
4
29 Wiilll be the ans
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