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If x2 + 1/x2 = 51 then find the x+l/x ?

Asked by Vikas 20th March 2017, 3:22 PM
Answered by Expert
Answer:

begin mathsize 16px style Given space straight x squared plus 1 over straight x squared equals 51
Adding space 2 space on space both space sides comma space we space get
space straight x squared plus 1 over straight x squared plus 2 equals 51 plus 2
rightwards double arrow open parentheses straight x plus 1 over straight x close parentheses squared equals 53
Taking space square space root space on space both space sides comma space we space get
straight x plus 1 over straight x equals plus-or-minus square root of 53 end style

Answered by Expert 20th March 2017, 3:30 PM
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