1.

\eqalign{ & {\text{The value of }} \cr & \frac{{\sqrt {80} - \sqrt {112} }}{{\sqrt {45} - \sqrt {63} }} = ? \cr} $$

A. 3/4
B. 1 3/4
C. 1 1/3
D. 1 7/9
Answer» D. 1 7/9


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