15x^2-4x+0.24=0

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Solution for 15x^2-4x+0.24=0 equation:


Simplifying
15x2 + -4x + 0.24 = 0

Reorder the terms:
0.24 + -4x + 15x2 = 0

Solving
0.24 + -4x + 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'.
0.016 + -0.2666666667x + x2 = 0

Move the constant term to the right:

Add '-0.016' to each side of the equation.
0.016 + -0.2666666667x + -0.016 + x2 = 0 + -0.016

Reorder the terms:
0.016 + -0.016 + -0.2666666667x + x2 = 0 + -0.016

Combine like terms: 0.016 + -0.016 = 0.000
0.000 + -0.2666666667x + x2 = 0 + -0.016
-0.2666666667x + x2 = 0 + -0.016

Combine like terms: 0 + -0.016 = -0.016
-0.2666666667x + x2 = -0.016

The x term is -0.2666666667x.  Take half its coefficient (-0.1333333334).
Square it (0.01777777780) and add it to both sides.

Add '0.01777777780' to each side of the equation.
-0.2666666667x + 0.01777777780 + x2 = -0.016 + 0.01777777780

Reorder the terms:
0.01777777780 + -0.2666666667x + x2 = -0.016 + 0.01777777780

Combine like terms: -0.016 + 0.01777777780 = 0.0017777778
0.01777777780 + -0.2666666667x + x2 = 0.0017777778

Factor a perfect square on the left side:
(x + -0.1333333334)(x + -0.1333333334) = 0.0017777778

Calculate the square root of the right side: 0.042163702

Break this problem into two subproblems by setting 
(x + -0.1333333334) equal to 0.042163702 and -0.042163702.

Subproblem 1

x + -0.1333333334 = 0.042163702 Simplifying x + -0.1333333334 = 0.042163702 Reorder the terms: -0.1333333334 + x = 0.042163702 Solving -0.1333333334 + x = 0.042163702 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.1333333334' to each side of the equation. -0.1333333334 + 0.1333333334 + x = 0.042163702 + 0.1333333334 Combine like terms: -0.1333333334 + 0.1333333334 = 0.0000000000 0.0000000000 + x = 0.042163702 + 0.1333333334 x = 0.042163702 + 0.1333333334 Combine like terms: 0.042163702 + 0.1333333334 = 0.1754970354 x = 0.1754970354 Simplifying x = 0.1754970354

Subproblem 2

x + -0.1333333334 = -0.042163702 Simplifying x + -0.1333333334 = -0.042163702 Reorder the terms: -0.1333333334 + x = -0.042163702 Solving -0.1333333334 + x = -0.042163702 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.1333333334' to each side of the equation. -0.1333333334 + 0.1333333334 + x = -0.042163702 + 0.1333333334 Combine like terms: -0.1333333334 + 0.1333333334 = 0.0000000000 0.0000000000 + x = -0.042163702 + 0.1333333334 x = -0.042163702 + 0.1333333334 Combine like terms: -0.042163702 + 0.1333333334 = 0.0911696314 x = 0.0911696314 Simplifying x = 0.0911696314

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.1754970354, 0.0911696314}

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