NDA2023MathematicsTrigonometric Ratios & IdentitiesActual
Let x+ y= 3 ( y- x) ; x+y= 2 , 0 x, y 2 What is a value of ^3 x+ ^3 y ?
Options
- A3 3 8
- B3 6 8
- C3 6 4
- D1
Correct answer
B. 3 6 8
Step-by-step solution
Since, aligned & ^3 ( 5 12 )+ ^3 ( 12 ) & = ( 3 -1 2 2 )^3+ ( 3 +1 2 2 )^3= 3 6 8 aligned