x(x-2)=36

Simple and best practice solution for x(x-2)=36 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(x-2)=36 equation:


Simplifying
x(x + -2) = 36

Reorder the terms:
x(-2 + x) = 36
(-2 * x + x * x) = 36
(-2x + x2) = 36

Solving
-2x + x2 = 36

Solving for variable 'x'.

Reorder the terms:
-36 + -2x + x2 = 36 + -36

Combine like terms: 36 + -36 = 0
-36 + -2x + x2 = 0

Begin completing the square.

Move the constant term to the right:

Add '36' to each side of the equation.
-36 + -2x + 36 + x2 = 0 + 36

Reorder the terms:
-36 + 36 + -2x + x2 = 0 + 36

Combine like terms: -36 + 36 = 0
0 + -2x + x2 = 0 + 36
-2x + x2 = 0 + 36

Combine like terms: 0 + 36 = 36
-2x + x2 = 36

The x term is -2x.  Take half its coefficient (-1).
Square it (1) and add it to both sides.

Add '1' to each side of the equation.
-2x + 1 + x2 = 36 + 1

Reorder the terms:
1 + -2x + x2 = 36 + 1

Combine like terms: 36 + 1 = 37
1 + -2x + x2 = 37

Factor a perfect square on the left side:
(x + -1)(x + -1) = 37

Calculate the square root of the right side: 6.08276253

Break this problem into two subproblems by setting 
(x + -1) equal to 6.08276253 and -6.08276253.

Subproblem 1

x + -1 = 6.08276253 Simplifying x + -1 = 6.08276253 Reorder the terms: -1 + x = 6.08276253 Solving -1 + x = 6.08276253 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1' to each side of the equation. -1 + 1 + x = 6.08276253 + 1 Combine like terms: -1 + 1 = 0 0 + x = 6.08276253 + 1 x = 6.08276253 + 1 Combine like terms: 6.08276253 + 1 = 7.08276253 x = 7.08276253 Simplifying x = 7.08276253

Subproblem 2

x + -1 = -6.08276253 Simplifying x + -1 = -6.08276253 Reorder the terms: -1 + x = -6.08276253 Solving -1 + x = -6.08276253 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1' to each side of the equation. -1 + 1 + x = -6.08276253 + 1 Combine like terms: -1 + 1 = 0 0 + x = -6.08276253 + 1 x = -6.08276253 + 1 Combine like terms: -6.08276253 + 1 = -5.08276253 x = -5.08276253 Simplifying x = -5.08276253

Solution

The solution to the problem is based on the solutions from the subproblems. x = {7.08276253, -5.08276253}

See similar equations:

| (5x+7)(7x-5)=0 | | 3m+4=7m-8 | | y=2x^2+5x-3 | | 4x^2-11x+6= | | 2x+15=-5 | | 42+13x+x^2= | | 24x^2+39x+15=0 | | x=-x-4 | | -x+2x=14 | | x(x-1)=12 | | 8-0.5(x+3)=0.25(x-1) | | 15p^4+31p^3q+2p^2q^2= | | y=-7(0) | | .5x+12=3 | | 14x+12=18x+4 | | 11x-x=-40 | | 25x^2-15x-130=0 | | 10x^2y+7xy^2+y^3= | | 3.4a+8.7a=38.72 | | 7x-29-21x=3-2(12+2x) | | -7x=-x | | 8x-2x=-6 | | -4x^2+8x-3=0 | | 2z^3+z^2-6z=0 | | 6x^2+20x+14=0 | | x^2-2x+1= | | 8w-2w=24 | | 2x^2=5x-2 | | -0.6x=-3 | | 42a^2-87a-45= | | (6x-18)(3x+2)=0 | | 5x+2x=4256 |

Equations solver categories