Posted by **Wilson** on Friday, October 4, 2013 at 12:13am.

1. 5(x^2 +2x-6) - 3(2+x-x^2)

2. 2x^4-5x(x^3 -y) + 2y(5x)

3.Factor 2x^5+6x4+4x^3+12x^2

4. Factor 9y^2-18y +8

Please help. Thank you!!

- Math -
**Steve**, Friday, October 4, 2013 at 12:29am
1.

5x^2+10x-30 - (6+3x-3x^2)

5x^2+10x-30+3x^2-3x-6

8x^2+7x-36

2. do this the same way

3.

2x^5+6x^4+4x^3+12x^2

2x^2(x^3+3x^2 + 2x+6)

now, by inspection, we have

2x^2(x^2(x+3) + 2(x+3))

to wind up with

2x^2(x^2+2)(x+3)

4. Looks like a difference of squares, but it's one off. So, tweak it a bit:

9(y^2-2y+1)-1

9(y-1)^2 - 1^2

(3(y-1)-1)(3(y-1)+1)

(3y-4)(3y-2)

## Answer this Question

## Related Questions

- Algebra - Can someone please check my work for me. Q: Plot the graph of the ...
- math factoring - 6x4-5t3-200t-163000 how do you factor this it cant be done by ...
- Algebra - I'm having trouble working out these problems. Could someone please ...
- Algebra - I'm not sure how to factor 3x^3-12x^2+3x. I tried separatring the 3x ...
- math - Can someone please help me with this factoring? Thanks! Factor 3x^2-7xy+...
- circles - I have to factor this to find what this graph looks like but I don't ...
- college algebra - Factor out the greatest common factor from each polynomial 9y^...
- help...solving a polynomial....algebra - solve this please....help me....12x(...
- Math - How do you solve this by substitution? x=6y+2 3x-18y=4 This is the answer...
- 10th grade math - How do I factor 4x^2-12x+8? so far I took out the Greatest ...

More Related Questions