orchidpsycho
New member
- Joined
- Sep 26, 2005
- Messages
- 41
Just wondering if someone could please check my work and see if I am on the right track? It has been almost 20 years since I have done algebra and I have to take it this semester for my major. Here is what I have done so far.
1. 30x^3+15x^4
my answer=15x^3(2+x)
2. 27a^3+b^3
my answer=(3a+b)(9a^2-3ab+b^2)
3. x^2-x-12/x^2+5x+6
my answer=x-4/x+2
4. x^2+2x-3/x^2-2x-3 X 3-x/3+x
my answer= -x-1/x+1
5. x^2-2x-15/x^2-6x+5 / x^2-x-12/x^2-1
my answer= (x-5)(x+1)/(x-5)(x-4)
6. x^2/x^2-4 - 1/x+2
my answer=(x-2)(x+1)/(x+2)(x-2)
7. P=2l+2w; solve for w
my answer= w=p-2l/2
There are prob. errors but I am not sure. I keep trying to do them over and over and seem to come up with the same answers. Thanks alot as I need help.
1. 30x^3+15x^4
my answer=15x^3(2+x)
2. 27a^3+b^3
my answer=(3a+b)(9a^2-3ab+b^2)
3. x^2-x-12/x^2+5x+6
my answer=x-4/x+2
4. x^2+2x-3/x^2-2x-3 X 3-x/3+x
my answer= -x-1/x+1
5. x^2-2x-15/x^2-6x+5 / x^2-x-12/x^2-1
my answer= (x-5)(x+1)/(x-5)(x-4)
6. x^2/x^2-4 - 1/x+2
my answer=(x-2)(x+1)/(x+2)(x-2)
7. P=2l+2w; solve for w
my answer= w=p-2l/2
There are prob. errors but I am not sure. I keep trying to do them over and over and seem to come up with the same answers. Thanks alot as I need help.