I Need Help With Math?

Question

Factor. Check by using FOIL or the distributive property.
^# means powers
45+2L^2
18z^2+9z+1
15r^2-16rt+4t^2
10k^2+105km+270m^2

Answer 1

a. This is a "wash". You can't factor it into neat little factors.
b. This factors easily. If you have ax2+bx+1, you can find factors from "a" if their sum is "b". In this case you got it (6z+1)(3z+1)
c. Here you have 2 variables, so you will have
cr+dt type factors if you have them at all.
d. A similar situation. You can divide out a 5 to get
2k2+ 21km+ 54m2. From divine intervention, the answer is (2k+9m)(k+6m). There is a neat method to do this. Maybe if you were less obnoxious, you could ask someone to show you it.

Answer 2

seriously?