3x^3+16x^2+21x=

Simple and best practice solution for 3x^3+16x^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+16x^2+21x= equation:


Simplifying
3x3 + 16x2 + 21x = 0

Reorder the terms:
21x + 16x2 + 3x3 = 0

Solving
21x + 16x2 + 3x3 = 0

Solving for variable 'x'.

Factor out the Greatest Common Factor (GCF), 'x'.
x(21 + 16x + 3x2) = 0

Factor a trinomial.
x((3 + x)(7 + 3x)) = 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 '(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

Subproblem 3

Set the factor '(7 + 3x)' equal to zero and attempt to solve: Simplifying 7 + 3x = 0 Solving 7 + 3x = 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 + 3x = 0 + -7 Combine like terms: 7 + -7 = 0 0 + 3x = 0 + -7 3x = 0 + -7 Combine like terms: 0 + -7 = -7 3x = -7 Divide each side by '3'. x = -2.333333333 Simplifying x = -2.333333333

Solution

x = {0, -3, -2.333333333}

See similar equations:

| 6k-3-2k=6+3k-2 | | 3(m-4)2m=m+8 | | 4x^3-4x^2-120x= | | x+3-10x=3(11-3x) | | -10t+3t^2-8= | | 5x-(7x+7)=9 | | w+8-4w-15= | | 16x^2-40xy+25y^2= | | 2m+6=12 | | (9+8)+4=9+(x+4) | | 6x-(2x-5)=2(2x+4) | | -14x^2+59x-35= | | 7+2l-6=-9 | | 56c^2d-23cd-63d=0 | | 23x+8-26x=2-9 | | -2+-5=-7 | | rs-t=w | | 2l-8+15=13 | | 10c=50 | | 3l-46=27 | | -6-6k+12=18 | | -4x+6x-15=31 | | 8x+17-7x=-5-12 | | 2m+1=16 | | 8a+8-17=15 | | -11x+18+x^2= | | (x-3)/15=2/5 | | 3x=6-9 | | 15x+60=-15 | | 13+10c-4=29 | | 5x+b=c | | 25y^2+20y+4= |

Equations solver categories