x^2-22.5x-112.5=0

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Solution for x^2-22.5x-112.5=0 equation:


Simplifying
x2 + -22.5x + -112.5 = 0

Reorder the terms:
-112.5 + -22.5x + x2 = 0

Solving
-112.5 + -22.5x + x2 = 0

Solving for variable 'x'.

Begin completing the square.

Move the constant term to the right:

Add '112.5' to each side of the equation.
-112.5 + -22.5x + 112.5 + x2 = 0 + 112.5

Reorder the terms:
-112.5 + 112.5 + -22.5x + x2 = 0 + 112.5

Combine like terms: -112.5 + 112.5 = 0.0
0.0 + -22.5x + x2 = 0 + 112.5
-22.5x + x2 = 0 + 112.5

Combine like terms: 0 + 112.5 = 112.5
-22.5x + x2 = 112.5

The x term is -22.5x.  Take half its coefficient (-11.25).
Square it (126.5625) and add it to both sides.

Add '126.5625' to each side of the equation.
-22.5x + 126.5625 + x2 = 112.5 + 126.5625

Reorder the terms:
126.5625 + -22.5x + x2 = 112.5 + 126.5625

Combine like terms: 112.5 + 126.5625 = 239.0625
126.5625 + -22.5x + x2 = 239.0625

Factor a perfect square on the left side:
(x + -11.25)(x + -11.25) = 239.0625

Calculate the square root of the right side: 15.461646096

Break this problem into two subproblems by setting 
(x + -11.25) equal to 15.461646096 and -15.461646096.

Subproblem 1

x + -11.25 = 15.461646096 Simplifying x + -11.25 = 15.461646096 Reorder the terms: -11.25 + x = 15.461646096 Solving -11.25 + x = 15.461646096 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '11.25' to each side of the equation. -11.25 + 11.25 + x = 15.461646096 + 11.25 Combine like terms: -11.25 + 11.25 = 0.00 0.00 + x = 15.461646096 + 11.25 x = 15.461646096 + 11.25 Combine like terms: 15.461646096 + 11.25 = 26.711646096 x = 26.711646096 Simplifying x = 26.711646096

Subproblem 2

x + -11.25 = -15.461646096 Simplifying x + -11.25 = -15.461646096 Reorder the terms: -11.25 + x = -15.461646096 Solving -11.25 + x = -15.461646096 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '11.25' to each side of the equation. -11.25 + 11.25 + x = -15.461646096 + 11.25 Combine like terms: -11.25 + 11.25 = 0.00 0.00 + x = -15.461646096 + 11.25 x = -15.461646096 + 11.25 Combine like terms: -15.461646096 + 11.25 = -4.211646096 x = -4.211646096 Simplifying x = -4.211646096

Solution

The solution to the problem is based on the solutions from the subproblems. x = {26.711646096, -4.211646096}

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