5x^2-12x-1080=0

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Solution for 5x^2-12x-1080=0 equation:


Simplifying
5x2 + -12x + -1080 = 0

Reorder the terms:
-1080 + -12x + 5x2 = 0

Solving
-1080 + -12x + 5x2 = 0

Solving for variable 'x'.

Begin completing the square.  Divide all terms by
5 the coefficient of the squared term: 

Divide each side by '5'.
-216 + -2.4x + x2 = 0

Move the constant term to the right:

Add '216' to each side of the equation.
-216 + -2.4x + 216 + x2 = 0 + 216

Reorder the terms:
-216 + 216 + -2.4x + x2 = 0 + 216

Combine like terms: -216 + 216 = 0
0 + -2.4x + x2 = 0 + 216
-2.4x + x2 = 0 + 216

Combine like terms: 0 + 216 = 216
-2.4x + x2 = 216

The x term is -2.4x.  Take half its coefficient (-1.2).
Square it (1.44) and add it to both sides.

Add '1.44' to each side of the equation.
-2.4x + 1.44 + x2 = 216 + 1.44

Reorder the terms:
1.44 + -2.4x + x2 = 216 + 1.44

Combine like terms: 216 + 1.44 = 217.44
1.44 + -2.4x + x2 = 217.44

Factor a perfect square on the left side:
(x + -1.2)(x + -1.2) = 217.44

Calculate the square root of the right side: 14.745846873

Break this problem into two subproblems by setting 
(x + -1.2) equal to 14.745846873 and -14.745846873.

Subproblem 1

x + -1.2 = 14.745846873 Simplifying x + -1.2 = 14.745846873 Reorder the terms: -1.2 + x = 14.745846873 Solving -1.2 + x = 14.745846873 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.2' to each side of the equation. -1.2 + 1.2 + x = 14.745846873 + 1.2 Combine like terms: -1.2 + 1.2 = 0.0 0.0 + x = 14.745846873 + 1.2 x = 14.745846873 + 1.2 Combine like terms: 14.745846873 + 1.2 = 15.945846873 x = 15.945846873 Simplifying x = 15.945846873

Subproblem 2

x + -1.2 = -14.745846873 Simplifying x + -1.2 = -14.745846873 Reorder the terms: -1.2 + x = -14.745846873 Solving -1.2 + x = -14.745846873 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.2' to each side of the equation. -1.2 + 1.2 + x = -14.745846873 + 1.2 Combine like terms: -1.2 + 1.2 = 0.0 0.0 + x = -14.745846873 + 1.2 x = -14.745846873 + 1.2 Combine like terms: -14.745846873 + 1.2 = -13.545846873 x = -13.545846873 Simplifying x = -13.545846873

Solution

The solution to the problem is based on the solutions from the subproblems. x = {15.945846873, -13.545846873}

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