1.

$$\frac{{\sqrt {3 + x}+ \sqrt {3 - x} }}{{\sqrt {3 + x}- \sqrt {3 - x} }} = 2{\text{,}}$$then x is equal to?

A. $\frac{5}{{12}}$$
B. $\frac{{12}}{5}$$
C. $\frac{5}{7}$$
D. $\frac{7}{5}$$
Answer» C. $\frac{5}{7}$$


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