x^3+8x^2+2x=0

Simple and best practice solution for x^3+8x^2+2x=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 x^3+8x^2+2x=0 equation:


Simplifying
x3 + 8x2 + 2x = 0

Reorder the terms:
2x + 8x2 + x3 = 0

Solving
2x + 8x2 + x3 = 0

Solving for variable 'x'.

Factor out the Greatest Common Factor (GCF), 'x'.
x(2 + 8x + x2) = 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 + 8x + x2)' equal to zero and attempt to solve: Simplifying 2 + 8x + x2 = 0 Solving 2 + 8x + x2 = 0 Begin completing the square. Move the constant term to the right: Add '-2' to each side of the equation. 2 + 8x + -2 + x2 = 0 + -2 Reorder the terms: 2 + -2 + 8x + x2 = 0 + -2 Combine like terms: 2 + -2 = 0 0 + 8x + x2 = 0 + -2 8x + x2 = 0 + -2 Combine like terms: 0 + -2 = -2 8x + x2 = -2 The x term is 8x. Take half its coefficient (4). Square it (16) and add it to both sides. Add '16' to each side of the equation. 8x + 16 + x2 = -2 + 16 Reorder the terms: 16 + 8x + x2 = -2 + 16 Combine like terms: -2 + 16 = 14 16 + 8x + x2 = 14 Factor a perfect square on the left side: (x + 4)(x + 4) = 14 Calculate the square root of the right side: 3.741657387 Break this problem into two subproblems by setting (x + 4) equal to 3.741657387 and -3.741657387.

Subproblem 1

x + 4 = 3.741657387 Simplifying x + 4 = 3.741657387 Reorder the terms: 4 + x = 3.741657387 Solving 4 + x = 3.741657387 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-4' to each side of the equation. 4 + -4 + x = 3.741657387 + -4 Combine like terms: 4 + -4 = 0 0 + x = 3.741657387 + -4 x = 3.741657387 + -4 Combine like terms: 3.741657387 + -4 = -0.258342613 x = -0.258342613 Simplifying x = -0.258342613

Subproblem 2

x + 4 = -3.741657387 Simplifying x + 4 = -3.741657387 Reorder the terms: 4 + x = -3.741657387 Solving 4 + x = -3.741657387 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-4' to each side of the equation. 4 + -4 + x = -3.741657387 + -4 Combine like terms: 4 + -4 = 0 0 + x = -3.741657387 + -4 x = -3.741657387 + -4 Combine like terms: -3.741657387 + -4 = -7.741657387 x = -7.741657387 Simplifying x = -7.741657387

Solution

The solution to the problem is based on the solutions from the subproblems. x = {-0.258342613, -7.741657387}

Solution

x = {0, -0.258342613, -7.741657387}

See similar equations:

| 8p-3=3p+3 | | 15+4v=103 | | 6y+1=25 | | -2.11=w-(-5.81) | | 20x^2-27=14 | | 10x+2=200 | | h*h*h*h*h= | | 45+2d=85 | | z-(-3.2)=3.69 | | 5.1=-1.7r | | 10=3v-6 | | 2(x+3)+5(x-3)= | | 36=-7x-6 | | 2x+4(-3)=-14 | | -.04w=.96 | | 4x+103=9x-12 | | 276-7x=38x+16 | | -.6=.3t | | 4x+10=9x-12 | | -.4s=.48 | | -6m-8=168 | | 7y=-25 | | .65=.05a | | 13-n=11 | | 0.75x=9 | | 9+-8l=273 | | -3x-3+5x-3-6=0 | | 4-3x=5-6x-7 | | 2m+3n= | | 12.8y=6.4 | | -20m-12=92 | | 25x^3-25x^2-36x=0 |

Equations solver categories