1.

यदि `2x+1/(3x)=5` हो तो `(5x)/(6x^(2)+20x+1)` एक का मान क्या होगा?A. `1//4`B. `1//6`C. `1//5`D. `1//7`

Answer» Correct Answer - D
`2x+1/(3x)=5`
`6x^(2)+1=15x`…………..i
Now
`=(5x)/(6x^(2)+20x+1)=(5x)/(6x^(2)+1+20x)`
`=(5x)/(15x+20x)` From equation i
`=(5x)/(35x)=1/7`


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