CDS 2023 · PYQ · Algebra · medium
If p = a²/((b−a)(c−a)), q = b²/((c−b)(a−b)), r = c²/((a−c)(b−c)), then what is (p+q+r)² equal to?
Answer
The correct answer is B: 1. Using partial fractions identity, p+q+r = 1 for the sum of squares form. (Standard result.) So (p+q+r)² = 1.
- A.0
- B.1✓ Correct
- C.4
- D.9
Using partial fractions identity, p+q+r = 1 for the sum of squares form. (Standard result.) So (p+q+r)² = 1.
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