Hey everyone, just need some help on 10 of these questions.

Factor Completely.

1. x^3 -16x +3x^2-48

2. 9x^3 - 9

3. 48a^4b-147b^3

4. Factor the polynomial: X^2 +11xy + 28y^2

5. Factor Completely: x^3 - x^2 - 30x

6. 15y^2 + 22y + 8

7. 512y^3 - 729

8. Solve: x^2 + 3x - 54 = 0

9. Solve: 2x^2-5x-7=0

10. One leg of a right triangle is 21 inches longer than the smaller leg, and the hypotenuse is 24 inches longer than the smaller leg. Find the lengths of the sides of the triangle.

If you could help it would be greatly appreciated, thanks.