If x + 1/x = 5 then x^2 + 1/x^2 equals?
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23
Step-by-step explanation:
x + 1 /x ) = 5
( x + 1 / x )^2 = 25
= x^2 + 1 / x^2 + 2 * x * 1/x =25
= x ^2 + 1/x^2 + 2 = 25
= X^2 + 1 / x^2 = 25 - 2 = 23 Ans .
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