Math, asked by jishnusreejith2004, 1 year ago

X^2+1/x^2=38, then the value of x+1/x is

Answers

Answered by Anonymous
4

Hello!

let x + 1/x = z

Squaring on both sides we have

( x + 1/x )² =

+ 1/ + 2x ( 1/x ) =

Becoz ( a + b )² = + + 2ab

+ 1/ + 2 =

= 38 + 2

= 40

z = ±(40)

z = ±2(10)

x + 1/x = ±2(10)

HOPE IT HELPS.


jishnusreejith2004: I got a different answer. You sure you are correct.
Anonymous: yup, i am sure.
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