3x^3+18x^2-21x=

Simple and best practice solution for 3x^3+18x^2-21x= 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 3x^3+18x^2-21x= equation:


Simplifying
3x3 + 18x2 + -21x = 0

Reorder the terms:
-21x + 18x2 + 3x3 = 0

Solving
-21x + 18x2 + 3x3 = 0

Solving for variable 'x'.

Factor out the Greatest Common Factor (GCF), '3x'.
3x(-7 + 6x + x2) = 0

Factor a trinomial.
3x((-7 + -1x)(1 + -1x)) = 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 + -1x)' equal to zero and attempt to solve: Simplifying -7 + -1x = 0 Solving -7 + -1x = 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 + -1x = 0 + 7 Combine like terms: -7 + 7 = 0 0 + -1x = 0 + 7 -1x = 0 + 7 Combine like terms: 0 + 7 = 7 -1x = 7 Divide each side by '-1'. x = -7 Simplifying x = -7

Subproblem 3

Set the factor '(1 + -1x)' equal to zero and attempt to solve: Simplifying 1 + -1x = 0 Solving 1 + -1x = 0 Move all terms containing x to the left, all other terms to the right. Add '-1' to each side of the equation. 1 + -1 + -1x = 0 + -1 Combine like terms: 1 + -1 = 0 0 + -1x = 0 + -1 -1x = 0 + -1 Combine like terms: 0 + -1 = -1 -1x = -1 Divide each side by '-1'. x = 1 Simplifying x = 1

Solution

x = {0, -7, 1}

See similar equations:

| 45=x/e | | t/32=11 | | 397=x*5 | | x(8x+9)=5 | | 0*a=a | | 6x-3=7+4x | | 3(2x+5)+9=12 | | 186=-6x-6(4x+4) | | (3*5)*4=3*(5*4) | | 5x=397 | | m+6=a | | 3.5*1=1 | | -11-5b=-16 | | 4x-9x=-12-8 | | (3x+5)(3x-5)=11 | | 3(2-6)=30 | | 4x-(2+3x)+1=-(3x-1) | | 8(3-3x)=-8x-24 | | 6(3-6)=54 | | -1+7=2 | | X+4+2=4 | | 10(x-3)-5(1-6x)=5(x-7) | | 2x^2-24x+92=22 | | 2m-10=4m | | x^2-16i=0 | | 7.2x-1.5=12.9 | | 1-2=-8 | | 3x^2-x-420=0 | | y=5+9x+2x^2 | | x^3+x^2-2=(x-1)(x^3-1) | | 3(4z-1)-3(z+5)=5(z+1) | | 24=-10x |

Equations solver categories