1. Mistake #1 (x+2) 2 ≠x 2 +4 Correction =x 2 +4x+4

2. Mistake #3 (3x) 2 ≠ 3x 2 Correction =9x 2 Mistake #2 Cannot simplify

3. Mistake #4 Can not simplify Mistake #5 Divided t

4. Mistake #6 3x+6=10 +6=+6 3x ≠ 16 Mistake #7

5. Mistake #8 4x+x ≠ 4x Correct way x(4+ ) Mistake #9 The left cannot be simplified

6. Mistake #10 2(3) x ≠ 6 x Cannot simplify These are just some of the many mistakes that I have seen over the years. Please try not to do any of these mistakes. The biggest problem is students not checking their work. If you check your work you’ll probably will find the mistakes.