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underset(xtoa)(lim)(sqrt(a+2x)-sqrt(3x))...

`underset(xtoa)(lim)(sqrt(a+2x)-sqrt(3x))/(sqrt(3a+x)-2sqrt(x))=`

A

`(2)/(3)`

B

`(2)/(sqrt(3))`

C

`(3sqrt(3))/(2)`

D

`(2)/(3sqrt(3))`

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