If x + (1/x) = 5, what is the value Q of x^2 + (1/x)^2? Choose the most appropriate option
A) Q=21
B) Q=22
C) Q=23
D) 24
E) 27
Squaring on both sides,   x^2 + (1 /x)^2 + 2(x)(1/x) = 5^2   x^2 + (1 /x)^2 = 23   Answer: Q=23
<result>C</result>
If x + (1/x) = 5, what is the value Q of x^2 + (1/x)^2?