posted by Liz

I don't know how to solve 12x(2)-15x=0 using the quadratic equation ax+bx+c=0 with this question I am unsure of what a, b and c are supposed to be, therefore I do not know how to solve this! Please help!

  1. drwls

    The standard quadratic equation form is
    ax^2 + bx + c = 0
    and your equation is, if your (2) is supposed to be an exponent,
    12x^2 -15x = 0
    Therefore a = 12, b = -15 and c = 0

    You have reduced your equaion to
    4x^2 -5x = 0,
    so using a=4, b=-5 and c=0 would give you the same results for x.

    You should get x = 0 and x = 5/4 as the solutions, using the quadratic equation

    x = [-b +/-sqrt(b^2 -4ac)]/(2a)

Respond to this Question

First Name

Your Answer

Similar Questions

  1. math

    just an algebra question. how would you solve: (3x^2 +5)(3x^2 +5) ^ means power :] Since you have not given us an equation, it is impossible to "solve" your problam. Please repost with the complete equation, so we can help you. I hope …
  2. help...solving a polynomial....algebra

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

    Please help to find x, y 1. 8x-y=17 6x+y=11 2. 5x-2y=17 2x+3y=3 Question no.1 8x-y=17 6x+y=11 (adding the equation) __________ (-y and +y will be 0) 14x =28 Taking variables to one side x=28 __ 14 14*2=28 therefore x=2 substitute this …
  4. algebra

    solve for x (24+2x)(10+2x) - 240 = 152 First multiply. 24(10) = ___ 2x (2x) = ____ Now subtract 240. Can you finish the problem from here?
  5. algebra II

    I'm quite clueless as to how to solve this. I know the quadratic equation but am not sure how to get this equation into the format to plug in to the quadratic... Solve the quadratic equation using the formula [1/(1+x)]-[1/(3-x)]=(6/35) …
  6. Algebra

    Solve the quadratic equation. 3x^2-15x+18=0 I know that the formula to quadratic equation is x=-b+and-(square root)b^2-4ac divided by 2a. I know that a=3, b=-15 and c=18, then subsitute in and get two answers, my problem is that I …
  7. Algebra

    -0.2x+12x+11 solve by using quadratic equation
  8. Algebra

    how do you solve this quadratic equation?
  9. Algebra 2

    Factor each quadratic equation: 8x^2+10x-3 25x^2+10x-3 9x^2-15x-14 12x^2+17x-5 I don't get how to even start these! Help!
  10. Algebra 2

    PLEASE HELP!!!!!!!!!!!!!!!!!! Solve each equation using the Quadratic Formula. x^2+12x+35=0

More Similar Questions