`2/(sqrt(7)+sqrt(5))+7/(sqrt(12)-sqrt(5))-5/(sqrt(12)-sqrt(7))` का सरलीकरण क्या है?
`2/(sqrt(7)+sqrt(5))+7/(sqrt(12)-sqrt(5))-5/(sqrt(12)-sqrt(7))` का सरलीकरण क्या है?
A. 5
B. 2
C. 1
D. 0
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1 Answers
Correct Answer - D
`2/(sqrt(7)+sqrt(5)+7/(sqrt(12)-sqrt(5))-5/(sqrt(12)-sqrt(7))`
`implies 2/(sqrt(7)+sqrt(5))xx(sqrt(7)-sqrt(5))/(sqrt(7)-sqrt(5))+`
`7/(sqrt(12)-sqrt(5))xx((sqrt(12)+sqrt(5)))/((sqrt(12)+sqrt(5)))-`
`(5/(sqrt(12)-sqrt(7))xx(sqrt(12)+sqrt(7))/(sqrt(12)+sqrt(7)))`
`implies (2(sqrt(7)-sqrt(5)))/2+(7(sqrt(12)+sqrt(5)))/7`
`-(5(sqrt(12)+sqrt(7))/5)`
`impliessqrt(7)-sqrt(5)+sqrt(12)+sqrt(5)-sqrt(12)-sqrt(7)`
`implies0`
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