1.

If $$x + \frac{1}{x} = 5{\text{,}}$$then the value of $$\frac{{{x^4} + 3{x^3} + 5{x^2} + 3x + 1}}{{{x^4} + 1}} = ?$$

A. $\frac{{43}}{{23}}$$
B. $\frac{{47}}{{21}}$$
C. $\frac{{41}}{{23}}$$
D. $\frac{{45}}{{21}}$$
Answer» B. $\frac{{47}}{{21}}$$


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