PDA

View Full Version : A few problems



JPHamlett
08-26-2011, 03:14 PM
I need some more math help.......I know I have been asking a lot lately but Thank you so much Villavu for helping me. That's why this site is the best!





Factor Completely
1.(0.81^2 - 0.0001)

Factor

1. 81r^6 - 3d^6

2. 12a^2 + 13a - 35

3. 4v^2 + 9v - 28

4. 14a^2 - 45a -14



Thank you!

c0de
08-26-2011, 03:37 PM
2. (4a-5)(3a+7)
3. (v+4)(4v-7)
4. (2a-7)(7a+2)

bolshak25
08-26-2011, 03:40 PM
3. (4v-7)(v+4)
4. (7a+2)(2a-7)

code beat me to 3, but he did 4 wrong
E: he edited his number 4

op: and i dont get either number 1, the first doesnt have any variables so you dont really factor it, and the second umber 1 has 2 different variables, are they supposed to be the same or not?

KingKong
08-27-2011, 01:29 AM
(0.81^2-0.0001)
(0.81-0.01)(0.81+0.01)
(0.80)(0.82)
0.656

but i think u want this?
(0.81x^2-0.0001)
(0.9x-0.01)(0.9x+0.01)