x^2-12x=-19

Simple and best practice solution for x^2-12x=-19 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=-19 equation:


Simplifying
x2 + -12x = -19

Reorder the terms:
-12x + x2 = -19

Solving
-12x + x2 = -19

Solving for variable 'x'.

Reorder the terms:
19 + -12x + x2 = -19 + 19

Combine like terms: -19 + 19 = 0
19 + -12x + x2 = 0

Begin completing the square.

Move the constant term to the right:

Add '-19' to each side of the equation.
19 + -12x + -19 + x2 = 0 + -19

Reorder the terms:
19 + -19 + -12x + x2 = 0 + -19

Combine like terms: 19 + -19 = 0
0 + -12x + x2 = 0 + -19
-12x + x2 = 0 + -19

Combine like terms: 0 + -19 = -19
-12x + x2 = -19

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 = -19 + 36

Reorder the terms:
36 + -12x + x2 = -19 + 36

Combine like terms: -19 + 36 = 17
36 + -12x + x2 = 17

Factor a perfect square on the left side:
(x + -6)(x + -6) = 17

Calculate the square root of the right side: 4.123105626

Break this problem into two subproblems by setting 
(x + -6) equal to 4.123105626 and -4.123105626.

Subproblem 1

x + -6 = 4.123105626 Simplifying x + -6 = 4.123105626 Reorder the terms: -6 + x = 4.123105626 Solving -6 + x = 4.123105626 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 = 4.123105626 + 6 Combine like terms: -6 + 6 = 0 0 + x = 4.123105626 + 6 x = 4.123105626 + 6 Combine like terms: 4.123105626 + 6 = 10.123105626 x = 10.123105626 Simplifying x = 10.123105626

Subproblem 2

x + -6 = -4.123105626 Simplifying x + -6 = -4.123105626 Reorder the terms: -6 + x = -4.123105626 Solving -6 + x = -4.123105626 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 = -4.123105626 + 6 Combine like terms: -6 + 6 = 0 0 + x = -4.123105626 + 6 x = -4.123105626 + 6 Combine like terms: -4.123105626 + 6 = 1.876894374 x = 1.876894374 Simplifying x = 1.876894374

Solution

The solution to the problem is based on the solutions from the subproblems. x = {10.123105626, 1.876894374}

See similar equations:

| Y=r+s+t/9 | | 6x^2+2x+-20=0 | | X+3.3x+2.1=3(x+4.6) | | -9+6x=-57 | | V+1=13 | | -9=3x-6(2x-6) | | -6y=-30 | | 0.8x-3=2.3x-24 | | 63=3x-3(3x-9) | | 2b-c=3 | | -14-4=5y-8y | | 4x+2(2x-8)=40 | | .02x-3=7 | | 4(3s-4)+12=6(s-1)-(3s+2) | | 5z=1.1 | | 22=-2x-4(-2x+11) | | x/3+x/5=16x3 | | -2-x=7 | | 45-9x=135 | | y=-1/3x+3 | | 3(1+y)=3(4y-1)-30 | | 8-3y=17 | | -12-3x=-6x-19 | | 1x-4/2=10 | | 9ab-9a+4ab-3a=0 | | 1.8-3s=1.2 | | 5/6(6x-7)-3/8(3x-2)=2/3(5x-6) | | 50x=34 | | 2x-4/2=10 | | 34x=50 | | -2x+14=x-13 | | x*0.053*4=657200 |

Equations solver categories