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Solve: (15)2 = __________1. 242. 2153. 2254. 205 |
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Answer» Correct Answer - Option 3 : 225 Given: Number is (15)2 Identity used: (a + b)2 = a2 + b2 + 2ab Calculation: (15)2 = (10 + 5)2 ⇒ (10)2 + 52 + 2 × 10 × 5 = 100 + 25 + 100 ∴ 225 Or we can simply calculate the vaue of 15 × 15 i.e.225 |
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