factoring completly

can anyone help me with these:
3x2 + 17x + 10
5y8 - 125
a2 - 2ab - 15b2
4c2 - 12c + 9

5 y^8 - 125 = 5(y^8 - 25)

y^8 - 25 can be written
(y^4 - 5)(y^4 + 5)

For the others, you need to try a few factors until you find a pair that works. For example,
a^2 - 2ab - 15b^2 = (a+3b)(a-5b)

  1. 👍 0
  2. 👎 0
  3. 👁 90
asked by mike

Respond to this Question

First Name

Your Response

Similar Questions

  1. ALGEBRA

    3x2 = 17x + 6

    asked by Randy on April 16, 2012
  2. Math

    1.3x^2+17x+10 2.5y^8-125 3.a^2-2ab-15b^2 *Please help me.You have to factor by completing. Let's look at #1: 3x^2 + 17x + 10 We have 2 and 5 as factors of the last term. What combinations can we do to arrive at the middle term?

    asked by Alex on February 4, 2007
  3. Integrated Math 1

    The parabolas y = -3x2 + 10x - 6 and y = -3x2 - 17x + 2 intersect at _____? A.the line y = 27x - 8. B. x=the square root of 2 over 3 and xthe -square root of 2 over 3. C. x=8/27. D. they do not intersect.

    asked by Tifini on July 8, 2012
  4. college math

    use long division 1.2x3+3x2-17x+1 /x-2 2.y3+3y2+1 /y-2 3.n5-n2 /n2-n

    asked by erin on November 11, 2011
  5. Algebra

    (x)/(x-3)-4-(2x-5)/(x+2) I posted something before this, so now this is how far I got. The answer I know is -(5x^2-17x-9)/(x-3)(x+2) first I get (x)(x+2)/(x-3)(x+2)- (4)(x-3)(x+2)/(x-3)(x+2)-(2x-5)(x-3)/(x-3)(x+2) Then I get

    asked by Sara on July 20, 2007
  6. Algebra

    (x)/(x-3)-4-(2x-5)/(x+2) I posted something before this, so now this is how far I got. The answer I know is -(5x^2-17x-9)/(x-3)(x+2) first I get (x)(x+2)/(x-3)(x+2)- (4)(x-3)(x+2)/(x-3)(x+2)-(2x-5)(x-3)/(x-3)(x+2) Then I get

    asked by Sara on July 20, 2007
  7. statistics

    Use the list and calculation method to answer the following questions. Show your work at each step. 4. You draw three cards (with replacement) from a standard deck of cards. What is the probability that a. exactly one will be red:

    asked by Lynn on June 7, 2013
  8. algebra

    Can someone please explain What polynomial has a graph that passes through the given points? (–4, 89), (–3, 7), (–1, –1), (1, –1), (4, 329) y = 2x3 – 3x2 – 2x + 1 y = 1x4 – 2x3 – 3x2 + 2x + 1 y = x4 – 2x3 + 3x2

    asked by lee on November 14, 2012
  9. Math help please check

    Add or Subtract for #3-4 3. (2x2 + 6x + 1) + (–7x2 + 2x – 3) 5x2 – 4x – 2 –5x2 + 8x – 2 5x2 – 8x + 2 –9x2 – 8x + 2 4. (3x2 – 7x – 4) – (6x2 – 6x + 1) –3x2 – x –5 –3x2 –13x + 5 9x2 – x + 5 3x2

    asked by Delilah on May 6, 2013
  10. Algebra

    Solve: 5x-3=11+12x; 17x-3=11; 17x-3+3=11+3= 17x=14; x= 14/17 is this right?

    asked by A.W. on February 1, 2009

More Similar Questions