Question

Evaluate the expression 3a + 4b – 5 when a 6 and b= 2. 3a + 4b3-5 = 3(6) + 4(2) - 5

Answer 1

It will be 45 because you have to add the like terms and then simplify.

Answer 2

3(6) + 4(2)^3 - 5​

3(6) + 4(8) - 5​ (Raising 2 to the power of 3)

18 + 32 - 5 (Multiplying)

45 (Adding and subtracting)

The answer is 45