6x^3+21x=0

Simple and best practice solution for 6x^3+21x=0 equation. Check how easy it is, and learn it for the future. Our solution is simple, and easy to understand, so don`t hesitate to use it as a solution of your homework.

If it's not what You are looking for type in the equation solver your own equation and let us solve it.

Solution for 6x^3+21x=0 equation:


Simplifying
6x3 + 21x = 0

Reorder the terms:
21x + 6x3 = 0

Solving
21x + 6x3 = 0

Solving for variable 'x'.

Factor out the Greatest Common Factor (GCF), '3x'.
3x(7 + 2x2) = 0

Ignore the factor 3.

Subproblem 1

Set the factor 'x' equal to zero and attempt to solve: Simplifying x = 0 Solving x = 0 Move all terms containing x to the left, all other terms to the right. Simplifying x = 0

Subproblem 2

Set the factor '(7 + 2x2)' equal to zero and attempt to solve: Simplifying 7 + 2x2 = 0 Solving 7 + 2x2 = 0 Move all terms containing x to the left, all other terms to the right. Add '-7' to each side of the equation. 7 + -7 + 2x2 = 0 + -7 Combine like terms: 7 + -7 = 0 0 + 2x2 = 0 + -7 2x2 = 0 + -7 Combine like terms: 0 + -7 = -7 2x2 = -7 Divide each side by '2'. x2 = -3.5 Simplifying x2 = -3.5 The solution to this equation could not be determined. This subproblem is being ignored because a solution could not be determined.

Solution

x = {0}

See similar equations:

| 6x-4+10=4(x-2) | | 15x-10xy= | | 3-2y=-1 | | 2.5*3.2-(25-18.5)= | | -4x-14=18+2x | | 2=6-12y | | 4x+2i=8-(2+y)i | | 4b-4-8b-5= | | 6x^2-24x=-18 | | 3y-7(3)=0 | | 6x^2-24x=18 | | 3y-7(2)=0 | | ax-6a^2+x^2=0 | | 3y-7(1)=0 | | 45=5(18x-36) | | 4x-14=18+2x | | 3x+4+5x=2(x+6)+4x | | 20*1/4+4+(8.5-2)= | | -15+5(-10)=-15 | | a^2+3ay+2ay^2+6y^3=0 | | -8x^2-10x+1=0 | | 6x+10.5=4x-9.5 | | 4x+4=18+2x | | 5(f-32)=495 | | 7(x+9)-23=7x+20+5x | | 12x+28=28-20 | | (0)=6+-2x | | 18x-35=22x+25 | | 5=2y-3 | | 1a-4b=620 | | 18x-35=22x+2 | | 4x+4=8+2x |

Equations solver categories