1. -4x^2 + 8x -9
2. 4x^2 -2x + 5
3. Use Mathway.. 33x-10
6. Use Mathway
7. Use Mathway (answer 3x^4-14x^3+20x^2-11x+2
9. 3.45 x 10^11
10 3.21 x 10^(-10) check using mathway.com
11. 34,500,000
12. .0000000534
13. Use Mathway.com. Copy and paste