if x+1/x=sqrt 5,find x^2+1/x^2
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Answered by
0
x+1/x=sqrt 5
(x+1/x)^2=5
x^2+1/x^2+2=5
So,
x^2+1/x^2=5-2=3
Hope it help..
PLZ MARK IT AS BRAINLIEST
(x+1/x)^2=5
x^2+1/x^2+2=5
So,
x^2+1/x^2=5-2=3
Hope it help..
PLZ MARK IT AS BRAINLIEST
Answered by
1
Given that:
x+1/x =√5
Now,
By squaring both sides
(x+1/x)^2 = (√5)^2
x^2 +1/x^2 +2 = 5
x^2 +1/x^2 =5-2
= 3
x+1/x =√5
Now,
By squaring both sides
(x+1/x)^2 = (√5)^2
x^2 +1/x^2 +2 = 5
x^2 +1/x^2 =5-2
= 3
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