The expression (11.98 × 11.98 + 11.98 × Q + 0.02 × 0.02) will be a perfect square for Q =
Solution
Correct Answer: Option C
আমরা জানি, (a² + 2ab + b²) = (a + b)²
এখন, 11.98 × 11.98 + 11.98 × Q + 0.02 × 0.02
= (11.98)² + 11.98 × Q + (0.02)²
∴ Perfect square হওয়ার জন্য,
11.98 × Q = 2 × 11.98 × 0.02
=> Q = 0.04
এখন, 11.98 × 11.98 + 11.98 × Q + 0.02 × 0.02
= (11.98)² + 11.98 × Q + (0.02)²
∴ Perfect square হওয়ার জন্য,
11.98 × Q = 2 × 11.98 × 0.02
=> Q = 0.04
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