Algebra

posted by .

I have several of these problems and am having trouble getting the hang of it.
Can you help me?

Factor. If the result is the square of a binomial, write it as such. If the result is prime, so state.
Here are the first couple of problems.

1) x^2 + 7x + 12
2) x^2 - x - 12
3) x^2 - 4x - 12

  • Algebra -

    With these easy ones that start with 1x^2
    look at the last term
    e.g for x^2 + 7x + 12
    last term is 12,
    can you find two factors of 12 that have a sum of the middle term, namely 7 ?
    yes: 3 and 4
    3x4 =12
    3+4 = 7
    so the factors are (x+3)(x+4)

    2nd:
    s^2 - x -12
    can you find two factors of -12 that have a sum of -1 ?
    yes! , -4 and 3
    -4(3) = -12
    -4 + 3 = -1
    so (x-4)(x+3)

    you try the last one, let me know what you got

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. Factoring and Prime

    I am still having troulbe with these. Her is another one I am stuck on. I think the prime is getting me. Factor completely or state that it is prime x^2 + 9xy + 16y^2 The factors of 16 are: 16 x 1. 8 x 2. 4 x 4. None of these add together …
  2. Advanced Algebra

    I some problems that I need help with please. Add or subtact as indicated and write the results in standard form. 4. 6-(-5+7i)-(7-2i) Divide and express the result in standard form. --These problems I don't understand, do you have …
  3. Math

    I don't have any specific problems I need help with, but I'm a bit confused about two things: 1) Where 2^x - 1 = y, is x or y the Mersenne prime?
  4. INTRODUCTORY ALGEBRA

    FOR HOMEWORK I HAVE TO DO A NUMBER TRICK BY PICKING A NUMBER ADD 5 DOUBLE THE RESULT SUBTRACT 4 THEN DIVIDE THE RESULT BY 2 AND THE RESULT SHOULD BE THREE.THEN I HAVE TO EPLAIN WHY THE RESULT IS ALWAYS 3. I DON'T GET IT CAN YOU PLEASE …
  5. probability/binomial

    i'm having trouble with probability and the binomial thm, could i get a good website with problems
  6. Algebra

    When factoring an equation, how do I know if the result is prime?
  7. Algebra

    I have four problems I'm having trouble with. I need to solve the equations by completing the square. 1) w^2 - 5w = 11/4 2) z^2 + 11z = -21/4 3) k^2 - 8k - 7 = 0 4) v^2 - 7v + 1 = 0
  8. Multiply write the result in scientific notation.

    Its only practice work but I NEED the extra points. These are the problems I am having trouble with: (9*10^4) (8*10^6)
  9. algebra

    Factor completely. If a polynomial is prime, state this x^2 -2/5x + 1/25 I am having trouble getting how this is done!
  10. algebra--1 question

    Suppose you divide a polynomial by a binomial. How do you know if the binomial is a factor of the polynomial?

More Similar Questions