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The binary operation * : R × R → R is defined as a * b = 2a + b. Find (2 * 3) * 4. |
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Answer» a * b = 2a + b, (2 * 3) * 4 ? 2 * 3 = 2(2) + 3 = 4 + 3 2 * 3 = 7 (2 * 3) * 4 = 7 * 4 = 2(7) + 4 = 14 + 4 = 18 |
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