15x^2-20x+10=0

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Solution for 15x^2-20x+10=0 equation: 


Simplifying
15x2 + -20x + 10 = 0

Reorder the terms:
10 + -20x + 15x2 = 0

Solving
10 + -20x + 15x2 = 0

Solving for variable 'x'.

Factor out the Greatest Common Factor (GCF), '5'.
5(2 + -4x + 3x2) = 0

Ignore the factor 5.

Subproblem 1
Set the factor '(2 + -4x + 3x2)' equal to zero and attempt to solve:

Simplifying
2 + -4x + 3x2 = 0

Solving
2 + -4x + 3x2 = 0

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

Divide each side by '3'.
0.6666666667 + -1.333333333x + x2 = 0

Move the constant term to the right:

Add '-0.6666666667' to each side of the equation.
0.6666666667 + -1.333333333x + -0.6666666667 + x2 = 0 + -0.6666666667

Reorder the terms:
0.6666666667 + -0.6666666667 + -1.333333333x + x2 = 0 + -0.6666666667

Combine like terms: 0.6666666667 + -0.6666666667 = 0.0000000000
0.0000000000 + -1.333333333x + x2 = 0 + -0.6666666667
-1.333333333x + x2 = 0 + -0.6666666667

Combine like terms: 0 + -0.6666666667 = -0.6666666667
-1.333333333x + x2 = -0.6666666667

The x term is -1.333333333x.  Take half its coefficient (-0.6666666665).
Square it (0.4444444442) and add it to both sides.

Add '0.4444444442' to each side of the equation.
-1.333333333x + 0.4444444442 + x2 = -0.6666666667 + 0.4444444442

Reorder the terms:
0.4444444442 + -1.333333333x + x2 = -0.6666666667 + 0.4444444442

Combine like terms: -0.6666666667 + 0.4444444442 = -0.2222222225
0.4444444442 + -1.333333333x + x2 = -0.2222222225

Factor a perfect square on the left side:
(x + -0.6666666665)(x + -0.6666666665) = -0.2222222225

Can't calculate square root of the right side.

The solution to this equation could not be determined.

This subproblem is being ignored because a solution could not be determined.

The solution to this equation could not be determined.

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