1.

`lim_(x rarr 5) (sqrt(x+20)-sqrt(3x+10))/(5-x)=`______.A. `-(2)/(5)`B. `(2)/(5)`C. `(1)/(5)`D. `(-1)/(5)`

Answer» Correct Answer - C
Rationalize the numerator and cancel common factor. Then substitute, x = 5.


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