21x^3-14x^2+7x=

Simple and best practice solution for 21x^3-14x^2+7x= 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 21x^3-14x^2+7x= equation: 


Simplifying
21x3 + -14x2 + 7x = 0

Reorder the terms:
7x + -14x2 + 21x3 = 0

Solving
7x + -14x2 + 21x3 = 0

Solving for variable 'x'.

Factor out the Greatest Common Factor (GCF), '7x'.
7x(1 + -2x + 3x2) = 0

Ignore the factor 7.

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 '(1 + -2x + 3x2)' equal to zero and attempt to solve:

Simplifying
1 + -2x + 3x2 = 0

Solving
1 + -2x + 3x2 = 0

Begin completing the square.  Divide all terms by
3 the coefficient of the squared term: 

Divide each side by '3'.
0.3333333333 + -0.6666666667x + x2 = 0

Move the constant term to the right:

Add '-0.3333333333' to each side of the equation.
0.3333333333 + -0.6666666667x + -0.3333333333 + x2 = 0 + -0.3333333333

Reorder the terms:
0.3333333333 + -0.3333333333 + -0.6666666667x + x2 = 0 + -0.3333333333

Combine like terms: 0.3333333333 + -0.3333333333 = 0.0000000000
0.0000000000 + -0.6666666667x + x2 = 0 + -0.3333333333
-0.6666666667x + x2 = 0 + -0.3333333333

Combine like terms: 0 + -0.3333333333 = -0.3333333333
-0.6666666667x + x2 = -0.3333333333

The x term is -0.6666666667x.  Take half its coefficient (-0.3333333334).
Square it (0.1111111112) and add it to both sides.

Add '0.1111111112' to each side of the equation.
-0.6666666667x + 0.1111111112 + x2 = -0.3333333333 + 0.1111111112

Reorder the terms:
0.1111111112 + -0.6666666667x + x2 = -0.3333333333 + 0.1111111112

Combine like terms: -0.3333333333 + 0.1111111112 = -0.2222222221
0.1111111112 + -0.6666666667x + x2 = -0.2222222221

Factor a perfect square on the left side:
(x + -0.3333333334)(x + -0.3333333334) = -0.2222222221

Can't calculate square root of the right side.

The solution to this equation could not be determined.

This subproblem is being ignored because a solution could not be determined.
Solution
x = {0}

See similar equations:

| -12(x-8)=3(x+17) | | 0.4x-0.5(2x+7)=-0.7(x+3) | | 80=-8a | | 19x+13=-16+8x | | 5-[t+3]=-1+2[t-3] | | 4x-7-x=8-2x | | -7+9x=38 | | 3x+7=2x-5 | | .66m-12=20 | | 3p+6=10+2p | | x^2+18=19x | | m-6=2 | | 4x-2x=-32 | | 4x+5(2x-7)=49 | | 4(2x+3)=2(5x-2) | | 12(x-9)=-4(x-9) | | 4x^2+16x+16=0 | | 5+3[q-4]=2[q+1] | | x+1= | | 18b^2a-4ba+7ab^2= | | -12=-n-5n | | x-5y=2 | | 4z+3=7z-2 | | y+14=-14 | | 0=2x+3xyz-p | | x^2-x-54=0 | | 54a^2-6= | | 49x^2-1=0 | | 0=6m-2m | | p=2x+3xyz | | 12x^2-27y^2= | | 5p+2=3p-5 |

Equations solver categories