x^3+10x^2+21x=0

Simple and best practice solution for x^3+10x^2+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 x^3+10x^2+21x=0 equation:


Simplifying
x3 + 10x2 + 21x = 0

Reorder the terms:
21x + 10x2 + x3 = 0

Solving
21x + 10x2 + x3 = 0

Solving for variable 'x'.

Factor out the Greatest Common Factor (GCF), 'x'.
x(21 + 10x + x2) = 0

Factor a trinomial.
x((7 + x)(3 + x)) = 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 '(7 + x)' equal to zero and attempt to solve: Simplifying 7 + x = 0 Solving 7 + x = 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 + x = 0 + -7 Combine like terms: 7 + -7 = 0 0 + x = 0 + -7 x = 0 + -7 Combine like terms: 0 + -7 = -7 x = -7 Simplifying x = -7

Subproblem 3

Set the factor '(3 + x)' equal to zero and attempt to solve: Simplifying 3 + x = 0 Solving 3 + x = 0 Move all terms containing x to the left, all other terms to the right. Add '-3' to each side of the equation. 3 + -3 + x = 0 + -3 Combine like terms: 3 + -3 = 0 0 + x = 0 + -3 x = 0 + -3 Combine like terms: 0 + -3 = -3 x = -3 Simplifying x = -3

Solution

x = {0, -7, -3}

See similar equations:

| n-5-3=-10+3 | | 12c^2-25c+12=0 | | 7x-15=-43 | | 3x+1.5=x+4.5 | | 2x+3y=11 | | 3x+8y=42 | | 4x^2+4x+1=16 | | 2(3g+2)=6g+4 | | (-33)+(25)+(-24)+(26)+(-18)= | | x(x+4)-x(x+2)= | | -25v=-4 | | -2y=-12 | | (2x^2-3)+(4x)= | | 6c^2-30c+24=0 | | 2x^2+5x=18 | | 4-1+5= | | 2x+9y=66 | | 18+(x-4)2-4= | | 3x+8=2+4x | | 5x-2x+3=24 | | b^2-13b+42=0 | | 6=-31-32+9 | | -5=21w | | -30=t+3t | | (14)+(18)+(-23)+(32)= | | x+1-3=-6 | | t^2+2t-24=0 | | x+12-26+3=175 | | 4m+17=7-6m | | 7x+14-6x=-4+10 | | 20-12+y=17 | | 5x+20=x-8 |

Equations solver categories