1.

If $$\frac{{\sqrt 7- 2}}{{\sqrt 7+ 2}} = a\sqrt 7+ b{\text{,}}$$then the value of a is?

A. $\frac{{11}}{3}$$
B. $ - \frac{4}{3}$$
C. $\frac{4}{3}$$
D. $\frac{{ - 4\sqrt 7 }}{3}$$
Answer» C. $\frac{4}{3}$$


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