Question

Trial and improvement. The equation has a solution between 3 and 4.

Answer 1

3.2

Explanation:

3.1

`(3.1)^(3)` + 2(3.1) = 35.991

3.2

`(3.2)^(3)` + 2(3.2) = 39.168 (40 -39.468 = .532)

3.3

`(3.3)^(3)` + 2(3.2) = 42.537 (40 - 42.537 = -2.537)