x+4=x^2+12x

Simple and best practice solution for x+4=x^2+12x 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 x+4=x^2+12x equation:


Simplifying
x + 4 = x2 + 12x

Reorder the terms:
4 + x = x2 + 12x

Reorder the terms:
4 + x = 12x + x2

Solving
4 + x = 12x + x2

Solving for variable 'x'.

Combine like terms: x + -12x = -11x
4 + -11x + -1x2 = 12x + x2 + -12x + -1x2

Reorder the terms:
4 + -11x + -1x2 = 12x + -12x + x2 + -1x2

Combine like terms: 12x + -12x = 0
4 + -11x + -1x2 = 0 + x2 + -1x2
4 + -11x + -1x2 = x2 + -1x2

Combine like terms: x2 + -1x2 = 0
4 + -11x + -1x2 = 0

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

Divide each side by '-1'.
-4 + 11x + x2 = 0

Move the constant term to the right:

Add '4' to each side of the equation.
-4 + 11x + 4 + x2 = 0 + 4

Reorder the terms:
-4 + 4 + 11x + x2 = 0 + 4

Combine like terms: -4 + 4 = 0
0 + 11x + x2 = 0 + 4
11x + x2 = 0 + 4

Combine like terms: 0 + 4 = 4
11x + x2 = 4

The x term is 11x.  Take half its coefficient (5.5).
Square it (30.25) and add it to both sides.

Add '30.25' to each side of the equation.
11x + 30.25 + x2 = 4 + 30.25

Reorder the terms:
30.25 + 11x + x2 = 4 + 30.25

Combine like terms: 4 + 30.25 = 34.25
30.25 + 11x + x2 = 34.25

Factor a perfect square on the left side:
(x + 5.5)(x + 5.5) = 34.25

Calculate the square root of the right side: 5.852349955

Break this problem into two subproblems by setting 
(x + 5.5) equal to 5.852349955 and -5.852349955.

Subproblem 1

x + 5.5 = 5.852349955 Simplifying x + 5.5 = 5.852349955 Reorder the terms: 5.5 + x = 5.852349955 Solving 5.5 + x = 5.852349955 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-5.5' to each side of the equation. 5.5 + -5.5 + x = 5.852349955 + -5.5 Combine like terms: 5.5 + -5.5 = 0.0 0.0 + x = 5.852349955 + -5.5 x = 5.852349955 + -5.5 Combine like terms: 5.852349955 + -5.5 = 0.352349955 x = 0.352349955 Simplifying x = 0.352349955

Subproblem 2

x + 5.5 = -5.852349955 Simplifying x + 5.5 = -5.852349955 Reorder the terms: 5.5 + x = -5.852349955 Solving 5.5 + x = -5.852349955 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-5.5' to each side of the equation. 5.5 + -5.5 + x = -5.852349955 + -5.5 Combine like terms: 5.5 + -5.5 = 0.0 0.0 + x = -5.852349955 + -5.5 x = -5.852349955 + -5.5 Combine like terms: -5.852349955 + -5.5 = -11.352349955 x = -11.352349955 Simplifying x = -11.352349955

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.352349955, -11.352349955}

See similar equations:

| 5+4x-3-7x=8 | | 7x^3-28x^2-14x=0 | | t^2-7t+6= | | -5-y=1 | | 4x^2-24x+64=0 | | ln(3x^2)-8+ln(4)=ln(76) | | 190.80=12x | | X/15=56.70 | | 1/2x-3/4=3/5x | | 9Z-6+2z=12z | | 10z+4=10z+6-12 | | (4/3)w-5=-(1/4)w-(7/4) | | 2x^2+x^2=243 | | 48.80=x | | -6x-6-4x=4 | | 8a+88=23 | | 8t-23=-23+6t | | x^2=7*9 | | 357-49=n | | 30+16k=-2k^2 | | 2p-18=-24+8p | | (7/3)-(5/2)y=-(1/2) | | 65=1/2x | | 4=-5x-x^2 | | cos^2(pi/2) | | -22x=-60-2x^2 | | 2sin(pi/2) | | 168=80x-8x^2 | | -(1/3)x-(5/4)=-(8/5) | | (x-19)(x-19)=27 | | 324=x^8 | | 8z^3/×2/z |

Equations solver categories