x^2+12x=4

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


Simplifying
x2 + 12x = 4

Reorder the terms:
12x + x2 = 4

Solving
12x + x2 = 4

Solving for variable 'x'.

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

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

Begin completing the square.

Move the constant term to the right:

Add '4' to each side of the equation.
-4 + 12x + 4 + x2 = 0 + 4

Reorder the terms:
-4 + 4 + 12x + x2 = 0 + 4

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

Combine like terms: 0 + 4 = 4
12x + x2 = 4

The x term is 12x.  Take half its coefficient (6).
Square it (36) and add it to both sides.

Add '36' to each side of the equation.
12x + 36 + x2 = 4 + 36

Reorder the terms:
36 + 12x + x2 = 4 + 36

Combine like terms: 4 + 36 = 40
36 + 12x + x2 = 40

Factor a perfect square on the left side:
(x + 6)(x + 6) = 40

Calculate the square root of the right side: 6.32455532

Break this problem into two subproblems by setting 
(x + 6) equal to 6.32455532 and -6.32455532.

Subproblem 1

x + 6 = 6.32455532 Simplifying x + 6 = 6.32455532 Reorder the terms: 6 + x = 6.32455532 Solving 6 + x = 6.32455532 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-6' to each side of the equation. 6 + -6 + x = 6.32455532 + -6 Combine like terms: 6 + -6 = 0 0 + x = 6.32455532 + -6 x = 6.32455532 + -6 Combine like terms: 6.32455532 + -6 = 0.32455532 x = 0.32455532 Simplifying x = 0.32455532

Subproblem 2

x + 6 = -6.32455532 Simplifying x + 6 = -6.32455532 Reorder the terms: 6 + x = -6.32455532 Solving 6 + x = -6.32455532 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-6' to each side of the equation. 6 + -6 + x = -6.32455532 + -6 Combine like terms: 6 + -6 = 0 0 + x = -6.32455532 + -6 x = -6.32455532 + -6 Combine like terms: -6.32455532 + -6 = -12.32455532 x = -12.32455532 Simplifying x = -12.32455532

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.32455532, -12.32455532}

See similar equations:

| (5x+3y)+(10y+30)+(3x+20)=180 | | 3x^2+5x+24=0 | | 3x^2+5x+2.09=0 | | 3x^2+5x+2.08=0 | | 5a+8whena=2 | | (1/2y^2-1/3y)(12y+3/5) | | F(x)=x^4-10x^3+36x^2-54x+27 | | 7x+5y=1142 | | 7x+5x=1142 | | -12.621*-4.698= | | 100.48=2r*3.14 | | -12.23*0.7= | | 6-4(3x-5)=2 | | 3x^2+5x+2.1=0 | | 3y=2x+7 | | 3x^2+5x+2.0833333=0 | | -11x=-4x^2+3 | | 5+4x=-9 | | z=100x+50y | | 5(x-1)=x-7 | | w^2-4w-32= | | 2xsquared+4x-4=0 | | 100x=f(x)-50y | | 240=2x+x-20 | | 7(x-49)=49 | | 314=3.14*r^23 | | 240=2x+(x-20) | | 3x^2+5x+k=0 | | 0+-6x=66 | | 0.5x^2+4x-8=0 | | 12+x=12x | | 12+x=16x |

Equations solver categories