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Find the value of (28)3 - (78)3 + (50)3 |
Answer» Let a = 28, b = - 78, c = 50 Then, a + b + c = 28 - 78 + 50 = 0 ∴ a3 + b3 + c3 = 3abc. So, (28)3 + (-78)3 + (50)3 = 3 × 28 × (-78) × 50 |
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