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Question

If 2-m×12m=14, then 114(4m)1/2+15m-1 is equal to

(a) 12

(b) 2  

(c) 4

(d) -14


Solution

We have to find the value ofprovided

Consider,

Equating the power of exponents we get 

By substituting we get 

Hence the correct choice is .


Mathematics
RD Sharma (2017)
Standard IX

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