1.

यदि `xy(x+y)=m` हो तो `x^(3)+y^(3)+3m` का मान बताइए?A. `m^(3)//xy`B. `m^(3)(x+y)^(2)`C. `m^(3)//x^(3)y^(3)`D. `mx^(3)y^(3)`

Answer» Correct Answer - C
`xy(x+y)-m` find `x^(3)+y^(3)+3m`
`xy(x+y)=m`…………….i
`(x+y)=m/(xy)`
Cubing both side
`x^(3)+y^(3)+.xy(x=y)=(m^(3))/(x^(3)y^(3))`
from equation i
`x^(3)+y^(3)+3xxm=(m^(3))/(x^(3)y^(3))`
`x^(3)+y^(3)+3x=(m^(3))/(x^(3)y^(3))`


Discussion

No Comment Found

Related InterviewSolutions