1.

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

A. $\frac{1}{4}$$
B. $\frac{1}{2}$$
C. $\frac{3}{4}$$
Answer» C. $\frac{3}{4}$$


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