x^2-4x-12=10

Simple and best practice solution for x^2-4x-12=10 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^2-4x-12=10 equation:


Simplifying
x2 + -4x + -12 = 10

Reorder the terms:
-12 + -4x + x2 = 10

Solving
-12 + -4x + x2 = 10

Solving for variable 'x'.

Reorder the terms:
-12 + -10 + -4x + x2 = 10 + -10

Combine like terms: -12 + -10 = -22
-22 + -4x + x2 = 10 + -10

Combine like terms: 10 + -10 = 0
-22 + -4x + x2 = 0

Begin completing the square.

Move the constant term to the right:

Add '22' to each side of the equation.
-22 + -4x + 22 + x2 = 0 + 22

Reorder the terms:
-22 + 22 + -4x + x2 = 0 + 22

Combine like terms: -22 + 22 = 0
0 + -4x + x2 = 0 + 22
-4x + x2 = 0 + 22

Combine like terms: 0 + 22 = 22
-4x + x2 = 22

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 = 22 + 4

Reorder the terms:
4 + -4x + x2 = 22 + 4

Combine like terms: 22 + 4 = 26
4 + -4x + x2 = 26

Factor a perfect square on the left side:
(x + -2)(x + -2) = 26

Calculate the square root of the right side: 5.099019514

Break this problem into two subproblems by setting 
(x + -2) equal to 5.099019514 and -5.099019514.

Subproblem 1

x + -2 = 5.099019514 Simplifying x + -2 = 5.099019514 Reorder the terms: -2 + x = 5.099019514 Solving -2 + x = 5.099019514 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 = 5.099019514 + 2 Combine like terms: -2 + 2 = 0 0 + x = 5.099019514 + 2 x = 5.099019514 + 2 Combine like terms: 5.099019514 + 2 = 7.099019514 x = 7.099019514 Simplifying x = 7.099019514

Subproblem 2

x + -2 = -5.099019514 Simplifying x + -2 = -5.099019514 Reorder the terms: -2 + x = -5.099019514 Solving -2 + x = -5.099019514 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 = -5.099019514 + 2 Combine like terms: -2 + 2 = 0 0 + x = -5.099019514 + 2 x = -5.099019514 + 2 Combine like terms: -5.099019514 + 2 = -3.099019514 x = -3.099019514 Simplifying x = -3.099019514

Solution

The solution to the problem is based on the solutions from the subproblems. x = {7.099019514, -3.099019514}

See similar equations:

| 7b+1=12b+13 | | 6ln(x-6)+2=3 | | 16+4x=-54 | | 3x+10+5x+10=180 | | 5x-19=24x-(3x+13) | | 2/11×7 | | 7x+11=-2 | | 55x+40=190 | | 5lnx+7lnx=84 | | 6y^2-14y+12=0 | | -ln(8)+ln(2)= | | F(x)=0.05(2)-800 | | 8y(3y-8)=3(y+1)-2 | | 6x-9=6+3x | | ln(8)+ln(2)= | | F(x)=0.05x-800 | | 5x+7y=-14 | | (5y-1)=(-5y+89) | | Loge(x+2)=3 | | 1x-5y=29 | | 4x+35=x-5 | | 4x+35+x-5=180 | | 8y+6=5y-9 | | 819x+25.5x^2=t | | 4x(x+4)+x^3+64=0 | | x^2-14=-33 | | x=1/5/7 | | 3(2x+5)-3=2(4-5x) | | 4t^2+6t+1=0 | | 4(-18+2x)-3y=-17 | | x=15/7 | | 24-z=12.4 |

Equations solver categories