7x^3-28x^2+7x=0

Simple and best practice solution for 7x^3-28x^2+7x=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^3-28x^2+7x=0 equation:


Simplifying
7x3 + -28x2 + 7x = 0

Reorder the terms:
7x + -28x2 + 7x3 = 0

Solving
7x + -28x2 + 7x3 = 0

Solving for variable 'x'.

Factor out the Greatest Common Factor (GCF), '7x'.
7x(1 + -4x + x2) = 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 + -4x + x2)' equal to zero and attempt to solve: Simplifying 1 + -4x + x2 = 0 Solving 1 + -4x + x2 = 0 Begin completing the square. Move the constant term to the right: Add '-1' to each side of the equation. 1 + -4x + -1 + x2 = 0 + -1 Reorder the terms: 1 + -1 + -4x + x2 = 0 + -1 Combine like terms: 1 + -1 = 0 0 + -4x + x2 = 0 + -1 -4x + x2 = 0 + -1 Combine like terms: 0 + -1 = -1 -4x + x2 = -1 The x term is -4x. Take half its coefficient (-2). Square it (4) and add it to both sides. Add '4' to each side of the equation. -4x + 4 + x2 = -1 + 4 Reorder the terms: 4 + -4x + x2 = -1 + 4 Combine like terms: -1 + 4 = 3 4 + -4x + x2 = 3 Factor a perfect square on the left side: (x + -2)(x + -2) = 3 Calculate the square root of the right side: 1.732050808 Break this problem into two subproblems by setting (x + -2) equal to 1.732050808 and -1.732050808.

Subproblem 1

x + -2 = 1.732050808 Simplifying x + -2 = 1.732050808 Reorder the terms: -2 + x = 1.732050808 Solving -2 + x = 1.732050808 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '2' to each side of the equation. -2 + 2 + x = 1.732050808 + 2 Combine like terms: -2 + 2 = 0 0 + x = 1.732050808 + 2 x = 1.732050808 + 2 Combine like terms: 1.732050808 + 2 = 3.732050808 x = 3.732050808 Simplifying x = 3.732050808

Subproblem 2

x + -2 = -1.732050808 Simplifying x + -2 = -1.732050808 Reorder the terms: -2 + x = -1.732050808 Solving -2 + x = -1.732050808 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '2' to each side of the equation. -2 + 2 + x = -1.732050808 + 2 Combine like terms: -2 + 2 = 0 0 + x = -1.732050808 + 2 x = -1.732050808 + 2 Combine like terms: -1.732050808 + 2 = 0.267949192 x = 0.267949192 Simplifying x = 0.267949192

Solution

The solution to the problem is based on the solutions from the subproblems. x = {3.732050808, 0.267949192}

Solution

x = {0, 3.732050808, 0.267949192}

See similar equations:

| -5(r+6)=-64 | | y-2.81=6.34 | | 8k-6-4k+44=30 | | 10N+2-9-7N+4N=13 | | 23+2x=10+11x | | -36-1x-7=5+6x+1 | | 1=b-3.5(5) | | 2+4n=8+2n | | k^2*-6k= | | -2(1x-2)=3x-13-5x | | -4+6(5z+3)=-z(z+4)-5 | | -22-x+4x=23 | | manglet=(4x-14) | | 0.05(x-40)=40 | | 96*142=x | | 8k-5=-69 | | 1m+3=m-1 | | 9.3+10.76=-10.7x+10.70 | | Wx-3y=-3 | | -8(3-3x)+1=97 | | (7x-12)+(6x+4)=180 | | 2x-101=169-8x | | 8a=1(2-9a) | | -3(x+5)+5=5(x+5)+6 | | 3d/64-1/4=d/4+5/4 | | 5c*4d^3= | | 17w=-15+18w | | 8+2(3*3)= | | 70=2r*10 | | 7(1+4x)=2x-19 | | R+6r=42 | | 18r^2+24rp+8p^2=0 |

Equations solver categories