Math

posted by .

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 -

    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)

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. Algebra

    I'm having trouble working out these problems. Could someone please assist?
  2. help...solving a polynomial....algebra

    solve this please....help me....12x(squared)+7x-10 Do you wish to factor this trinomial?
  3. math

    Can someone please help me with this factoring?
  4. circles

    I have to factor this to find what this graph looks like but I don't know if I'm doing it right. 6x^2-12x+6y^2+36y=36 3x^2-6x+3y^2+18y=18 I'm stopping there because I don't know if I divide by 2 or 6
  5. college algebra

    Factor out the greatest common factor from each polynomial 9y^2 -18y + 8
  6. Algebra

    Can someone please check my work for me. Q: Plot the graph of the equations 2x - 3y = 5 and 4x - 6y = 21 and interpret the result. A: 6(2x ¨C 3y = 5) = 12x ¨C 18y = 30 3(4x - 6y = 21) = 12x - 18y = 63 12x ¨C 18y = 30 + 12x - 18y …
  7. 10th grade math

    How do I factor 4x^2-12x+8? so far I took out the Greatest Common Factor. 4(x^2-3x+2) What next?
  8. Algebra

    I'm not sure how to factor 3x^3-12x^2+3x. I tried separatring the 3x so that 3x(x+1)(x-4, but I got -3x^3+-12x^2-3x^2+12x. Can you show me where I went wrong and how to properly factor this?
  9. math factoring

    6x4-5t3-200t-163000 how do you factor this it cant be done by common factor or decomposition method..help!!
  10. Math

    How do you solve this by substitution? x=6y+2 3x-18y=4 This is the answer I get: 3(6y+2)-18y=4 18y+6-18y=4 18y+1818y+6-18y+18y=4 36y=10 36 36 Y=5/18 3x-18(5/18) =4 3x-5+5= 4+5 3x= 9 3 3 X=3 (3, 5/18)

More Similar Questions