Question

यद‌ि `x+y=15` है तो `(x-10)^(3)+(y-5)^(3)` का मान क्‍या है?
A. 25
B. 125
C. 625
D. 0

Answer 1

Correct Answer - D
`x+y=15`
`implies x-10=5-y`
`x-10=-(y-5)`
Take cube on both sides
`implies (x-10)^(3)=(-(y-5))^(3)`
`implies (x-10)^(3)+(y-5)^(3)-0`