### Home > APCALC > Chapter 4 > Lesson 4.2.4 > Problem 4-83

4-83.

Chang Young is attempting to evaluate the following integral:

He writes the following steps:

He knows that this is a definite integral and there should not be any s in his answer. Also, the answer key says the answer is

His error is in the first line. How does he use or not use the Distributive Property?