15x^2-37x+8=0

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Solution for 15x^2-37x+8=0 equation:


Simplifying
15x2 + -37x + 8 = 0

Reorder the terms:
8 + -37x + 15x2 = 0

Solving
8 + -37x + 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'.
0.5333333333 + -2.466666667x + x2 = 0

Move the constant term to the right:

Add '-0.5333333333' to each side of the equation.
0.5333333333 + -2.466666667x + -0.5333333333 + x2 = 0 + -0.5333333333

Reorder the terms:
0.5333333333 + -0.5333333333 + -2.466666667x + x2 = 0 + -0.5333333333

Combine like terms: 0.5333333333 + -0.5333333333 = 0.0000000000
0.0000000000 + -2.466666667x + x2 = 0 + -0.5333333333
-2.466666667x + x2 = 0 + -0.5333333333

Combine like terms: 0 + -0.5333333333 = -0.5333333333
-2.466666667x + x2 = -0.5333333333

The x term is -2.466666667x.  Take half its coefficient (-1.233333334).
Square it (1.521111113) and add it to both sides.

Add '1.521111113' to each side of the equation.
-2.466666667x + 1.521111113 + x2 = -0.5333333333 + 1.521111113

Reorder the terms:
1.521111113 + -2.466666667x + x2 = -0.5333333333 + 1.521111113

Combine like terms: -0.5333333333 + 1.521111113 = 0.9877777797
1.521111113 + -2.466666667x + x2 = 0.9877777797

Factor a perfect square on the left side:
(x + -1.233333334)(x + -1.233333334) = 0.9877777797

Calculate the square root of the right side: 0.993870102

Break this problem into two subproblems by setting 
(x + -1.233333334) equal to 0.993870102 and -0.993870102.

Subproblem 1

x + -1.233333334 = 0.993870102 Simplifying x + -1.233333334 = 0.993870102 Reorder the terms: -1.233333334 + x = 0.993870102 Solving -1.233333334 + x = 0.993870102 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.233333334' to each side of the equation. -1.233333334 + 1.233333334 + x = 0.993870102 + 1.233333334 Combine like terms: -1.233333334 + 1.233333334 = 0.000000000 0.000000000 + x = 0.993870102 + 1.233333334 x = 0.993870102 + 1.233333334 Combine like terms: 0.993870102 + 1.233333334 = 2.227203436 x = 2.227203436 Simplifying x = 2.227203436

Subproblem 2

x + -1.233333334 = -0.993870102 Simplifying x + -1.233333334 = -0.993870102 Reorder the terms: -1.233333334 + x = -0.993870102 Solving -1.233333334 + x = -0.993870102 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.233333334' to each side of the equation. -1.233333334 + 1.233333334 + x = -0.993870102 + 1.233333334 Combine like terms: -1.233333334 + 1.233333334 = 0.000000000 0.000000000 + x = -0.993870102 + 1.233333334 x = -0.993870102 + 1.233333334 Combine like terms: -0.993870102 + 1.233333334 = 0.239463232 x = 0.239463232 Simplifying x = 0.239463232

Solution

The solution to the problem is based on the solutions from the subproblems. x = {2.227203436, 0.239463232}

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