AARONSALES46GO AARONSALES46GO Math Answered 1. 78- 21 6. 12m2 - 9m + 15 7. 13a + 26a2 - 39a3 2. x2 + 4 3. 3x2 + 9x - 16 8. -6b4 - 12b3c 4. 49x3 - 35x2 + 21x 9. 17x2 + 34x + 51 5. m5+m3 + 3m 10. 18r2s4 - 12r2S3 + 24r2s2