x^2-12x=25

Simple and best practice solution for x^2-12x=25 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=25 equation:


Simplifying
x2 + -12x = 25

Reorder the terms:
-12x + x2 = 25

Solving
-12x + x2 = 25

Solving for variable 'x'.

Reorder the terms:
-25 + -12x + x2 = 25 + -25

Combine like terms: 25 + -25 = 0
-25 + -12x + x2 = 0

Begin completing the square.

Move the constant term to the right:

Add '25' to each side of the equation.
-25 + -12x + 25 + x2 = 0 + 25

Reorder the terms:
-25 + 25 + -12x + x2 = 0 + 25

Combine like terms: -25 + 25 = 0
0 + -12x + x2 = 0 + 25
-12x + x2 = 0 + 25

Combine like terms: 0 + 25 = 25
-12x + x2 = 25

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 = 25 + 36

Reorder the terms:
36 + -12x + x2 = 25 + 36

Combine like terms: 25 + 36 = 61
36 + -12x + x2 = 61

Factor a perfect square on the left side:
(x + -6)(x + -6) = 61

Calculate the square root of the right side: 7.810249676

Break this problem into two subproblems by setting 
(x + -6) equal to 7.810249676 and -7.810249676.

Subproblem 1

x + -6 = 7.810249676 Simplifying x + -6 = 7.810249676 Reorder the terms: -6 + x = 7.810249676 Solving -6 + x = 7.810249676 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 = 7.810249676 + 6 Combine like terms: -6 + 6 = 0 0 + x = 7.810249676 + 6 x = 7.810249676 + 6 Combine like terms: 7.810249676 + 6 = 13.810249676 x = 13.810249676 Simplifying x = 13.810249676

Subproblem 2

x + -6 = -7.810249676 Simplifying x + -6 = -7.810249676 Reorder the terms: -6 + x = -7.810249676 Solving -6 + x = -7.810249676 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 = -7.810249676 + 6 Combine like terms: -6 + 6 = 0 0 + x = -7.810249676 + 6 x = -7.810249676 + 6 Combine like terms: -7.810249676 + 6 = -1.810249676 x = -1.810249676 Simplifying x = -1.810249676

Solution

The solution to the problem is based on the solutions from the subproblems. x = {13.810249676, -1.810249676}

See similar equations:

| 4x+4x=4x | | 1/31/4= | | 10x^2=40x | | x(6b-a)=a(x-2b) | | x-2.2=-6.5 | | 6y=9-9+6y | | x-6=5x-3 | | 5-(-2)=7 | | -6(1-5e)=54 | | (9x-3)(x+3)= | | 5x-8=x+8 | | 10x^2=80x | | x^2+12x=25 | | -8(2n-4)+5=43 | | -2(620n)=20(2n-3) | | y=4x-9(8) | | (4y+3)(y+2)= | | 2-3x=5x-6 | | 90x+180=120x | | 2x^2-14x=60 | | 48k^3-147k=245-80k^2 | | 29-17p=56 | | 3z*2z^2= | | 2(x+1)-3=35 | | 7x+2=4x+17 | | 4(x+5)=9x-5 | | 5(x+4)-3=74 | | 7(x+3)=4x-9 | | 96=8x | | m=2m+2w | | -2x-6=3x+29 | | m=2t+2w |

Equations solver categories