algebra

posted by .

find the real solution of the equation by graphing
6x^3-2x=-9x^2

i got 0.2,-1.7 is this correct

  • algebra -

    6 x ^ 3 - 2 x = - 9 x ^ 2 Add 9 x ^ 2 to both sides

    6 x ^ 3 - 2 x + 9 x ^ 2 = - 9 x ^ 2 + 9 x ^ 2

    6 x ^ 3 + 9 x ^ 2 - 2 x = 0

    x * ( 6 x ^ 2 + 9 x - 2 )= 0

    You equation have 3 solutions:

    Obviously solution x = 0

    Equation :

    6 x ^ 2 + 9 x - 2 = 0

    have two solutions :

    x1/2= [ - 9 + OR - sqrt ( 129 ) ] / 12


    3 solutions are :

    x1 = 0

    x2 = [ - 9 + sqrt ( 129 ) ] / 12

    x3 = [ - 9 - sqrt ( 129 ) ] / 12


    Your two soutions are correct but polinomial equation of degre 3 have 3 solutions.

    Oneof solutions are x = 0

  • algebra -

    thank you for checking and helping

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. Algebra

    1.Solve (x)/(x+10)+(x-3)/(x+2)=7/5..I got that there is no solution, is that correct?
  2. algebra

    1)Identify the y-intercept and the axis of symemetry for the graph of f(x)=-3x^2+6x+12. answer=12:x=1 2)Determine whether f(x)=-5x^2-10x+6 has a maximum or minimum value and find that value. answer=maximum -1 3)Solve x^2=4x by graphing …
  3. algebra

    Will someone please look over these? I am so lost on these. 1. find the domain of p(x)=xsquared+10- I said {x|x is a real number 2. find the intercepts of 3x+2y=6- I got (0,3) and (2,0) 4.find the equation of (-6,-6)and (6,6)- got
  4. Algebra

    Find the real solutions of the equation by graphing. 6x^3-2x=-9x^2
  5. college algebra

    Find all real solutions of the equation. (Enter your answers as a comma-separated list. If there is no real solution, enter NO REAL SOLUTION.) x4 + 27x = 0
  6. Math

    Graph the equation. Be sure to simplify equation before graphing it. -18+2y=-7y I got the answer y=2 because I subtracted 2 from both sides got -9 then divided by -18 and got 2. y=2. So now can someone help me with graphing the points?
  7. Algebra 2

    find the real solutions of each equation by graphing. 2x^4=9x^2-4
  8. Algebra 2

    What are the real and complex solutions of the polynomial equation?
  9. ALGEBRA CHECK ANSWERS

    Solve each equation by graphing the related function. If the equation has no real-number solution, write no solution. NOTE: when I write + it has a minus on the bottom too x^2+7=0 a. x= +7 b. x = +3.5 c. x= 0 d. no solution *** 3x^2=0 …
  10. algebra

    Solve each equation by graphing the related function. If the equation has no real-number solution, write no solution. 1 .x^2-9=0 2. x^+7=0 3. 3x^2=0 4. 1/4x^2-4=0 5. 4g^2=25 6. 64b^2=16 7.144-p^2=0 8. 5z^2-45=0 9. h^2=49 10.s^2-35=-35 …

More Similar Questions