1.

The surd obtained after rationalizing the numberator of `(4-sqrt(25-a))/(a-9)` is equal toA. `(a-9)/(4-sqrt(25-a))`B. `(1)/(4-sqrt(25-a))`C. `(1)/((a-9)(4+sqrt(25-a)))`D. `(1)/(4+sqrt(25-a))`

Answer» Correct Answer - B
R F of `a-sqrt(b) ` is `a+sqrt(b)`.


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