27x^2-15x-160=0

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Solution for 27x^2-15x-160=0 equation:


Simplifying
27x2 + -15x + -160 = 0

Reorder the terms:
-160 + -15x + 27x2 = 0

Solving
-160 + -15x + 27x2 = 0

Solving for variable 'x'.

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

Divide each side by '27'.
-5.925925926 + -0.5555555556x + x2 = 0

Move the constant term to the right:

Add '5.925925926' to each side of the equation.
-5.925925926 + -0.5555555556x + 5.925925926 + x2 = 0 + 5.925925926

Reorder the terms:
-5.925925926 + 5.925925926 + -0.5555555556x + x2 = 0 + 5.925925926

Combine like terms: -5.925925926 + 5.925925926 = 0.000000000
0.000000000 + -0.5555555556x + x2 = 0 + 5.925925926
-0.5555555556x + x2 = 0 + 5.925925926

Combine like terms: 0 + 5.925925926 = 5.925925926
-0.5555555556x + x2 = 5.925925926

The x term is -0.5555555556x.  Take half its coefficient (-0.2777777778).
Square it (0.07716049384) and add it to both sides.

Add '0.07716049384' to each side of the equation.
-0.5555555556x + 0.07716049384 + x2 = 5.925925926 + 0.07716049384

Reorder the terms:
0.07716049384 + -0.5555555556x + x2 = 5.925925926 + 0.07716049384

Combine like terms: 5.925925926 + 0.07716049384 = 6.00308641984
0.07716049384 + -0.5555555556x + x2 = 6.00308641984

Factor a perfect square on the left side:
(x + -0.2777777778)(x + -0.2777777778) = 6.00308641984

Calculate the square root of the right side: 2.450119675

Break this problem into two subproblems by setting 
(x + -0.2777777778) equal to 2.450119675 and -2.450119675.

Subproblem 1

x + -0.2777777778 = 2.450119675 Simplifying x + -0.2777777778 = 2.450119675 Reorder the terms: -0.2777777778 + x = 2.450119675 Solving -0.2777777778 + x = 2.450119675 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.2777777778' to each side of the equation. -0.2777777778 + 0.2777777778 + x = 2.450119675 + 0.2777777778 Combine like terms: -0.2777777778 + 0.2777777778 = 0.0000000000 0.0000000000 + x = 2.450119675 + 0.2777777778 x = 2.450119675 + 0.2777777778 Combine like terms: 2.450119675 + 0.2777777778 = 2.7278974528 x = 2.7278974528 Simplifying x = 2.7278974528

Subproblem 2

x + -0.2777777778 = -2.450119675 Simplifying x + -0.2777777778 = -2.450119675 Reorder the terms: -0.2777777778 + x = -2.450119675 Solving -0.2777777778 + x = -2.450119675 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.2777777778' to each side of the equation. -0.2777777778 + 0.2777777778 + x = -2.450119675 + 0.2777777778 Combine like terms: -0.2777777778 + 0.2777777778 = 0.0000000000 0.0000000000 + x = -2.450119675 + 0.2777777778 x = -2.450119675 + 0.2777777778 Combine like terms: -2.450119675 + 0.2777777778 = -2.1723418972 x = -2.1723418972 Simplifying x = -2.1723418972

Solution

The solution to the problem is based on the solutions from the subproblems. x = {2.7278974528, -2.1723418972}

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