[(3.537 - .948)² + (3.537 + .948)²] / [(3.537)² + (.948)²] = ?

• A. 3
• B. 0
• C. 2
• D. 1

Answer: (C)

Given expression = [(3.537 - .948)² + (3.537 + .948)²] / [(3.537)² + (.948)²] = [(a - b)² + (a + b)²] / (a²+ b²) (Where a = 3.537 and b = 0.948)= 2(a² +b²) / (a² +b²) = 2