These are basic factoring equations, I have the answers to all of these problems but I just need the work. I'm studying for my assessment test for college and it's very sad to say that I have forgotten how to do these basic problems. Please help. A quick explanation would be helpful, if possible, of how you got the answer.

1. $\displaystyle x^2-10x+16$

2. $\displaystyle 10x^2-40$

3. $\displaystyle 9x^2+18x+8$

4. $\displaystyle 2x^3+12x^2-5x-30$

5. $\displaystyle 4x^2+4x-15$

6. $\displaystyle 3x^2-x-10$

7. $\displaystyle 6x^2+34xy-12y^2$

8. $\displaystyle 16x^4-y^4$

9. $\displaystyle 9x^3-18x^2-x+2$

Studying from this: http://www.crc.losrios.edu/Documents...statistics.pdf