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Q: If 2x - y = 5, then (2x - 3)3 - (y + 2)3 is equal to यदि 2x - y = 5, lees (2x - 3)3 - (y + 2)3 बराबर है
  • A.
  • B. 25
  • C. 40
  • D. 125
Correct Answer: Option A - 2x–y = 5 ........... (i) = (2x–3)³ – (y+2)³ = (2x–y+y–3)³–(y+2)³ = (5+y–3)³ – ( y+2)³ समी. (i) से = (y+2)³ –(y+2)³ = 0
A. 2x–y = 5 ........... (i) = (2x–3)³ – (y+2)³ = (2x–y+y–3)³–(y+2)³ = (5+y–3)³ – ( y+2)³ समी. (i) से = (y+2)³ –(y+2)³ = 0

Explanations:

2x–y = 5 ........... (i) = (2x–3)³ – (y+2)³ = (2x–y+y–3)³–(y+2)³ = (5+y–3)³ – ( y+2)³ समी. (i) से = (y+2)³ –(y+2)³ = 0