7x^3+3x^2+5x=0

Simple and best practice solution for 7x^3+3x^2+5x=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 7x^3+3x^2+5x=0 equation: 


Simplifying
7x3 + 3x2 + 5x = 0

Reorder the terms:
5x + 3x2 + 7x3 = 0

Solving
5x + 3x2 + 7x3 = 0

Solving for variable 'x'.

Factor out the Greatest Common Factor (GCF), 'x'.
x(5 + 3x + 7x2) = 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 '(5 + 3x + 7x2)' equal to zero and attempt to solve:

Simplifying
5 + 3x + 7x2 = 0

Solving
5 + 3x + 7x2 = 0

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

Divide each side by '7'.
0.7142857143 + 0.4285714286x + x2 = 0

Move the constant term to the right:

Add '-0.7142857143' to each side of the equation.
0.7142857143 + 0.4285714286x + -0.7142857143 + x2 = 0 + -0.7142857143

Reorder the terms:
0.7142857143 + -0.7142857143 + 0.4285714286x + x2 = 0 + -0.7142857143

Combine like terms: 0.7142857143 + -0.7142857143 = 0.0000000000
0.0000000000 + 0.4285714286x + x2 = 0 + -0.7142857143
0.4285714286x + x2 = 0 + -0.7142857143

Combine like terms: 0 + -0.7142857143 = -0.7142857143
0.4285714286x + x2 = -0.7142857143

The x term is 0.4285714286x.  Take half its coefficient (0.2142857143).
Square it (0.04591836735) and add it to both sides.

Add '0.04591836735' to each side of the equation.
0.4285714286x + 0.04591836735 + x2 = -0.7142857143 + 0.04591836735

Reorder the terms:
0.04591836735 + 0.4285714286x + x2 = -0.7142857143 + 0.04591836735

Combine like terms: -0.7142857143 + 0.04591836735 = -0.66836734695
0.04591836735 + 0.4285714286x + x2 = -0.66836734695

Factor a perfect square on the left side:
(x + 0.2142857143)(x + 0.2142857143) = -0.66836734695

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:

| x^5-34x^4+289x^3=0 | | (x^2-3x+2)(x^2-7x+12)=0 | | 12x^4-5x^3-2x^2=0 | | 10x^5-13x^4-3x^3=0 | | 2x^4+2x=0 | | r+224=19 | | 4x^3+8x^2=0 | | -40-36b+7=56 | | r+224=119 | | -9x^3+3x^2=0 | | 3x+10=9x+8 | | a-35=9 | | -6(v-9)=-4v+34 | | 7x-7=3(x-5) | | 210x^2-1980x+7700=6230 | | 9(x+2)=3x-30 | | 2a-12=72 | | -8u+32=7(u-4) | | r+15=87 | | 7x-23+5x+20= | | 8(x+3)=5x+3b | | -7-9t=-5 | | 2(x-6)=30 | | 6n+5=4n+18 | | 207=31m | | 1000-500*2= | | 3y-36=80 | | 3x-6x+4=8-2x+3 | | 2x-y=73x-y=5howtogettheXYform | | w=7.5-2.5w | | 2x-y=73x-y=5 | | (n+4)(n-3)=98 |

Equations solver categories