5-2x=x(x+6)

Simple and best practice solution for 5-2x=x(x+6) 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 5-2x=x(x+6) equation:


Simplifying
5 + -2x = x(x + 6)

Reorder the terms:
5 + -2x = x(6 + x)
5 + -2x = (6 * x + x * x)
5 + -2x = (6x + x2)

Solving
5 + -2x = 6x + x2

Solving for variable 'x'.

Combine like terms: -2x + -6x = -8x
5 + -8x + -1x2 = 6x + x2 + -6x + -1x2

Reorder the terms:
5 + -8x + -1x2 = 6x + -6x + x2 + -1x2

Combine like terms: 6x + -6x = 0
5 + -8x + -1x2 = 0 + x2 + -1x2
5 + -8x + -1x2 = x2 + -1x2

Combine like terms: x2 + -1x2 = 0
5 + -8x + -1x2 = 0

Begin completing the square.  Divide all terms by
-1 the coefficient of the squared term: 

Divide each side by '-1'.
-5 + 8x + x2 = 0

Move the constant term to the right:

Add '5' to each side of the equation.
-5 + 8x + 5 + x2 = 0 + 5

Reorder the terms:
-5 + 5 + 8x + x2 = 0 + 5

Combine like terms: -5 + 5 = 0
0 + 8x + x2 = 0 + 5
8x + x2 = 0 + 5

Combine like terms: 0 + 5 = 5
8x + x2 = 5

The x term is 8x.  Take half its coefficient (4).
Square it (16) and add it to both sides.

Add '16' to each side of the equation.
8x + 16 + x2 = 5 + 16

Reorder the terms:
16 + 8x + x2 = 5 + 16

Combine like terms: 5 + 16 = 21
16 + 8x + x2 = 21

Factor a perfect square on the left side:
(x + 4)(x + 4) = 21

Calculate the square root of the right side: 4.582575695

Break this problem into two subproblems by setting 
(x + 4) equal to 4.582575695 and -4.582575695.

Subproblem 1

x + 4 = 4.582575695 Simplifying x + 4 = 4.582575695 Reorder the terms: 4 + x = 4.582575695 Solving 4 + x = 4.582575695 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-4' to each side of the equation. 4 + -4 + x = 4.582575695 + -4 Combine like terms: 4 + -4 = 0 0 + x = 4.582575695 + -4 x = 4.582575695 + -4 Combine like terms: 4.582575695 + -4 = 0.582575695 x = 0.582575695 Simplifying x = 0.582575695

Subproblem 2

x + 4 = -4.582575695 Simplifying x + 4 = -4.582575695 Reorder the terms: 4 + x = -4.582575695 Solving 4 + x = -4.582575695 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-4' to each side of the equation. 4 + -4 + x = -4.582575695 + -4 Combine like terms: 4 + -4 = 0 0 + x = -4.582575695 + -4 x = -4.582575695 + -4 Combine like terms: -4.582575695 + -4 = -8.582575695 x = -8.582575695 Simplifying x = -8.582575695

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.582575695, -8.582575695}

See similar equations:

| m^3-3m+4=0 | | 0.1(x-8)=9 | | D^3-2D^2-3D^2+6D+2D-4=0 | | 5(0.2-x)=25 | | Y^3dx+(3xy^2+3)dy=0 | | (y-4.23)/y=.35 | | -0.01x=1 | | a(a-3)+7(a-3)= | | 3.6x=-7.2 | | 5+5+2x=x+15 | | Y=1.50x-60 | | 2x(3x-4)=1 | | 5y+6=30 | | (x-2.27)/x=.35 | | 5x-15=y(4-3x) | | 20+5x(3-10)= | | 11y+3=8y+6 | | 2x+24=42 | | 195/(52-((75-(61-((6*(47-17))/4)))-12)) | | x-1+10x+25=-5-24 | | x*10y=270 | | 33x-66/-11 | | x-1+4x+4=-5-24 | | 11x-13y=-35 | | (-12x+6)+(4x-12)=14x | | Log1/3(9x(y^3-8)) | | 3xsin(2x)=3 | | 10k+48=10k-2k-14 | | 12k+48=10k-2k-7 | | 4a-5b+a-2b= | | Y=22+0.3X | | 6xX+9=51 |

Equations solver categories