81x^3-4x=0

Simple and best practice solution for 81x^3-4x=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 81x^3-4x=0 equation:


Simplifying
81x3 + -4x = 0

Reorder the terms:
-4x + 81x3 = 0

Solving
-4x + 81x3 = 0

Solving for variable 'x'.

Factor out the Greatest Common Factor (GCF), 'x'.
x(-4 + 81x2) = 0

Factor a difference between two squares.
x((2 + 9x)(-2 + 9x)) = 0

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 '(2 + 9x)' equal to zero and attempt to solve: Simplifying 2 + 9x = 0 Solving 2 + 9x = 0 Move all terms containing x to the left, all other terms to the right. Add '-2' to each side of the equation. 2 + -2 + 9x = 0 + -2 Combine like terms: 2 + -2 = 0 0 + 9x = 0 + -2 9x = 0 + -2 Combine like terms: 0 + -2 = -2 9x = -2 Divide each side by '9'. x = -0.2222222222 Simplifying x = -0.2222222222

Subproblem 3

Set the factor '(-2 + 9x)' equal to zero and attempt to solve: Simplifying -2 + 9x = 0 Solving -2 + 9x = 0 Move all terms containing x to the left, all other terms to the right. Add '2' to each side of the equation. -2 + 2 + 9x = 0 + 2 Combine like terms: -2 + 2 = 0 0 + 9x = 0 + 2 9x = 0 + 2 Combine like terms: 0 + 2 = 2 9x = 2 Divide each side by '9'. x = 0.2222222222 Simplifying x = 0.2222222222

Solution

x = {0, -0.2222222222, 0.2222222222}

See similar equations:

| 4b+16+2b=-14 | | y=5E-08x | | -5w+9=15g-9 | | 2b-4-5b-7= | | 81x^3-4=0 | | 5-(z+3)=7+2(x-3) | | (4x)+(x+30)=180 | | (X-2.3)*7=8.4 | | 3-3y+3y=-6 | | 4(x+3)+3x=-(5x-21)+x | | 8x+24+3x=6x+1 | | -3(-3+4x)-15=-18 | | m^2-6m+7=1 | | 7x^2+42x-2=0 | | 345+115y=255+130y | | y+(-8)=4 | | 308=22b | | 12c+5=-11 | | 3d+15=2d | | 13a+2=5a+8 | | 11+5m=86 | | 2g+2(-5+2g)=1-g | | 8(x+3)+11=15+2(x+35) | | 9x^2+16=65 | | -6+3u=-21 | | 6x*x=11 | | -5(x+4)+6x=-24 | | 345+115y=255+115y | | 3+6+7= | | -9(x+6)=18 | | 6(2x-7)=2(6x+8) | | n+(n-1)+(n-3)=36 |

Equations solver categories