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JIf x+1/x=5, find the value of x²+1/x²​

JIf x+1/x=5, find the value of x²+1/x²​
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JIf x+1/x=5, find the value of x²+1/x²​

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User Svein Bringsli
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7.3k points

1 Answer

3 votes


x^2+(1)/(x^2)=\left(x+(1)/(x)\right)^2-2

Therefore, if
x+(1)/(x)=5 then


x^2+(1)/(x^2)=5^2-2=25-2=23

answered
User Magiraud
by
8.1k points
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