15x^2-15x-44.1=0

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Solution for 15x^2-15x-44.1=0 equation:


Simplifying
15x2 + -15x + -44.1 = 0

Reorder the terms:
-44.1 + -15x + 15x2 = 0

Solving
-44.1 + -15x + 15x2 = 0

Solving for variable 'x'.

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

Divide each side by '15'.
-2.94 + -1x + x2 = 0

Move the constant term to the right:

Add '2.94' to each side of the equation.
-2.94 + -1x + 2.94 + x2 = 0 + 2.94

Reorder the terms:
-2.94 + 2.94 + -1x + x2 = 0 + 2.94

Combine like terms: -2.94 + 2.94 = 0.00
0.00 + -1x + x2 = 0 + 2.94
-1x + x2 = 0 + 2.94

Combine like terms: 0 + 2.94 = 2.94
-1x + x2 = 2.94

The x term is -1x.  Take half its coefficient (-0.5).
Square it (0.25) and add it to both sides.

Add '0.25' to each side of the equation.
-1x + 0.25 + x2 = 2.94 + 0.25

Reorder the terms:
0.25 + -1x + x2 = 2.94 + 0.25

Combine like terms: 2.94 + 0.25 = 3.19
0.25 + -1x + x2 = 3.19

Factor a perfect square on the left side:
(x + -0.5)(x + -0.5) = 3.19

Calculate the square root of the right side: 1.78605711

Break this problem into two subproblems by setting 
(x + -0.5) equal to 1.78605711 and -1.78605711.

Subproblem 1

x + -0.5 = 1.78605711 Simplifying x + -0.5 = 1.78605711 Reorder the terms: -0.5 + x = 1.78605711 Solving -0.5 + x = 1.78605711 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.5' to each side of the equation. -0.5 + 0.5 + x = 1.78605711 + 0.5 Combine like terms: -0.5 + 0.5 = 0.0 0.0 + x = 1.78605711 + 0.5 x = 1.78605711 + 0.5 Combine like terms: 1.78605711 + 0.5 = 2.28605711 x = 2.28605711 Simplifying x = 2.28605711

Subproblem 2

x + -0.5 = -1.78605711 Simplifying x + -0.5 = -1.78605711 Reorder the terms: -0.5 + x = -1.78605711 Solving -0.5 + x = -1.78605711 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.5' to each side of the equation. -0.5 + 0.5 + x = -1.78605711 + 0.5 Combine like terms: -0.5 + 0.5 = 0.0 0.0 + x = -1.78605711 + 0.5 x = -1.78605711 + 0.5 Combine like terms: -1.78605711 + 0.5 = -1.28605711 x = -1.28605711 Simplifying x = -1.28605711

Solution

The solution to the problem is based on the solutions from the subproblems. x = {2.28605711, -1.28605711}

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