(x)(x-3)=117

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Solution for (x)(x-3)=117 equation:


Simplifying
(x)(x + -3) = 117

Reorder the terms:
x(-3 + x) = 117
(-3 * x + x * x) = 117
(-3x + x2) = 117

Solving
-3x + x2 = 117

Solving for variable 'x'.

Reorder the terms:
-117 + -3x + x2 = 117 + -117

Combine like terms: 117 + -117 = 0
-117 + -3x + x2 = 0

Begin completing the square.

Move the constant term to the right:

Add '117' to each side of the equation.
-117 + -3x + 117 + x2 = 0 + 117

Reorder the terms:
-117 + 117 + -3x + x2 = 0 + 117

Combine like terms: -117 + 117 = 0
0 + -3x + x2 = 0 + 117
-3x + x2 = 0 + 117

Combine like terms: 0 + 117 = 117
-3x + x2 = 117

The x term is -3x.  Take half its coefficient (-1.5).
Square it (2.25) and add it to both sides.

Add '2.25' to each side of the equation.
-3x + 2.25 + x2 = 117 + 2.25

Reorder the terms:
2.25 + -3x + x2 = 117 + 2.25

Combine like terms: 117 + 2.25 = 119.25
2.25 + -3x + x2 = 119.25

Factor a perfect square on the left side:
(x + -1.5)(x + -1.5) = 119.25

Calculate the square root of the right side: 10.920164834

Break this problem into two subproblems by setting 
(x + -1.5) equal to 10.920164834 and -10.920164834.

Subproblem 1

x + -1.5 = 10.920164834 Simplifying x + -1.5 = 10.920164834 Reorder the terms: -1.5 + x = 10.920164834 Solving -1.5 + x = 10.920164834 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.5' to each side of the equation. -1.5 + 1.5 + x = 10.920164834 + 1.5 Combine like terms: -1.5 + 1.5 = 0.0 0.0 + x = 10.920164834 + 1.5 x = 10.920164834 + 1.5 Combine like terms: 10.920164834 + 1.5 = 12.420164834 x = 12.420164834 Simplifying x = 12.420164834

Subproblem 2

x + -1.5 = -10.920164834 Simplifying x + -1.5 = -10.920164834 Reorder the terms: -1.5 + x = -10.920164834 Solving -1.5 + x = -10.920164834 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.5' to each side of the equation. -1.5 + 1.5 + x = -10.920164834 + 1.5 Combine like terms: -1.5 + 1.5 = 0.0 0.0 + x = -10.920164834 + 1.5 x = -10.920164834 + 1.5 Combine like terms: -10.920164834 + 1.5 = -9.420164834 x = -9.420164834 Simplifying x = -9.420164834

Solution

The solution to the problem is based on the solutions from the subproblems. x = {12.420164834, -9.420164834}

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