### Home > CC2MN > Chapter 6 Unit 6B > Lesson CC2: 6.2.6 > Problem 6-123

6-123.

Show the “check” for each of these problems and write whether the solution is correct or incorrect. Homework Help ✎

For

, does ?Substitute

for .Now simplify.

Is this statement true?For

, does ?Follow the steps in part (a).