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Question
If the binary operation * on the set Z of integers is defined by a * b = a + 3b2, find the value of 2 * 4.
Solution
Given: a * b = a + 3b2
Here,
2 * 4 = 2 + 3 (4)2
= 2 + 3 (16)
= 2 + 48
= 50
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