Given a binary operation denoted by “”, where a b is defined as 3a^b + 5, what is the result of 5 * 2?

Question

Given a binary operation denoted by “*”, where a * b is defined as 3a^b + 5, what is the result of 5 * 2?

Answer 1

Given a binary operation denoted by “*”, where a * b is defined as 3a^b + 5, what is the result of 5 * 2?

Explanation

Put a = 5 and b = 2 into the rule 3a^b + 5.

First do the power: 5² = 25. Then multiply by 3: 3 × 25 = 75. Then add 5: 75 + 5 = 80.

75 is the tempting wrong answer: it comes from forgetting the + 5.

Was this explanation helpful?

Something wrong or missing? Tell us — we read every report and fix issues fast.