If x + (1/x) = 5, what is the value of E=x^2 + (1/x)^2?  Pick
A) E=21	B) E=22	C) E=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: E=23
<result>C</result>
If x + (1/x) = 5, what is the value of E=x^2 + (1/x)^2?