Grade7needAnswersgo Grade7needAnswersgo Math Answered Simplify each of the following. 1. 3 ^ 2 + 3 ^ 3 2. 3. 4. 5. 4 ^ 2 - 3 ^ 2 (13 ^ 2)/(13 ^ 5) 3 ^ 2 + 5 ^ 2 (6 ^ 4)/(6 ^ 3) 3 ^ 2 * (4 ^ 2) 7. 8. (7 ^ 4)/(4 ^ 2) 4 ^ 2 - 3 ^ 3 9. 1 ^ 4 * (- 1) ^ 6 10.72 (7 ^ 2)/