Simplification · Question 13 · Hard
Simplify: (0.75^3 − 0.25^3) ÷ (0.75^2 + 0.75 × 0.25 + 0.25^2)
- 1
- 0.25
- 0.75
- 0.5
Answer and explanation
Answer: D. 0.5
Explanation: Using a^3 − b^3 = (a − b)(a^2 + ab + b^2), the expression equals a − b = 0.75 − 0.25 = 0.5.
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