The binary operation *: R × R → R is defined as a * b = 2a + b. F… - Vidyadip

Question

The binary operation *: R × R → R is defined as a * b = 2a + b. Find (2 * 3) * 4.

✓

Answer

It is given that, a * b = 2a + b
Now,
(2 * 3) = 2 × 2 + 3
= 4 + 3
= 7
(2 * 3) * 4 = 7 * 4 = 2 × 7 + 4
= 14 + 4
= 18

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