math

posted by .

completing the square

2m^2-m-15=0

using the quadratic formula

2y^2-3y-6=0

  • math -

    2m^2 - m = 15
    m^2- (1/2)m = 15/2
    m^2 - (1/2)m + 1/16 = 15/2 + 1/16
    (m - 1/4)^2 = 121/16
    m - 1/4= ± 11/4
    m = 1/4 ± 11/4
    m = 3 or m = -5/2

    the second one is simply subbing into the formula and number-crunching.
    let me know what you got.

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. math,algebra

    can someone help me out factor out this 0=16t^2-122t+180 i have so far this but the last one i am not sure 8(2t^2-14t + ?
  2. math,correction

    Is this correct now. Problem #1 solve by completing the square. 2x^2+8x+3=0 My answer: x=-2 +/- sqrt (5)/(2) Problem #2 solve by using the quadratic formula 5x^2+3x+1=0 My answer: No solution are defined. You are not completing the …
  3. Algebra Quadratic Equations

    I am trying to define the different appraoches to solving quadratic equations. My book says using quadratic formula, completing the sqaure and factoring. I thought completing the square would be by facotring?
  4. math

    1. solve by using the quadratic formula. 5x^2+x=3 2. solve by completing the square. x^2=5x+2 3.solve by using the square roots method. 5(x-2)^2=3
  5. ALGEBRA--MAT 117

    Quadratic equations can be solved by graphing, using the quadratic formula, completing the square, and factoring. What are the pros and cons of each of these methods?
  6. ALGEBRA

    Quadratic equations can be solved by graphing, using the quadratic formula, completing the square, and factoring. What are the pros and cons of each of these methods?
  7. Algebra

    I was given this answers to a problems I solved but I do not understand what she means hope you can help. Before attempting to solve this quadratic equation, determine how many solutions there will be for this quadratic equation. Explain …
  8. Algebra

    I was given this answers to a problems I solved but I do not understand what she means hope you can help. Before attempting to solve this quadratic equation, determine how many solutions there will be for this quadratic equation. Explain …
  9. math 117

    Quadratic equations may be solved by graphing, using the quadratic formula, completing the square, and factoring. What are the pros and cons of each of these methods?
  10. algebra

    Quadratic equations can be solved by graphing,using the quadratic formula, completing the square, and factoring. What are the pros and cons of the methods. when would each be appropriate?

More Similar Questions