SSC MTS 2025 · PYQ · Algebra · medium
[(0.5)⁴ − (0.4)⁴] / [(0.5)² + (0.4)²] = ?
Answer
The correct answer is C: 0.09. Using a⁴−b⁴ = (a²+b²)(a²−b²), the expression simplifies to (0.5²−0.4²) = (0.5+0.4)(0.5−0.4) = 0.9×0.1 = 0.09.
- A.0.11
- B.0.10
- C.0.09✓ Correct
- D.0.12
Using a⁴−b⁴ = (a²+b²)(a²−b²), the expression simplifies to (0.5²−0.4²) = (0.5+0.4)(0.5−0.4) = 0.9×0.1 = 0.09.
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