0.6x^2-7.2x+2=0

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Solution for 0.6x^2-7.2x+2=0 equation:


Simplifying
0.6x2 + -7.2x + 2 = 0

Reorder the terms:
2 + -7.2x + 0.6x2 = 0

Solving
2 + -7.2x + 0.6x2 = 0

Solving for variable 'x'.

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

Divide each side by '0.6'.
3.333333333 + -12x + x2 = 0

Move the constant term to the right:

Add '-3.333333333' to each side of the equation.
3.333333333 + -12x + -3.333333333 + x2 = 0 + -3.333333333

Reorder the terms:
3.333333333 + -3.333333333 + -12x + x2 = 0 + -3.333333333

Combine like terms: 3.333333333 + -3.333333333 = 0.000000000
0.000000000 + -12x + x2 = 0 + -3.333333333
-12x + x2 = 0 + -3.333333333

Combine like terms: 0 + -3.333333333 = -3.333333333
-12x + x2 = -3.333333333

The x term is -12x.  Take half its coefficient (-6).
Square it (36) and add it to both sides.

Add '36' to each side of the equation.
-12x + 36 + x2 = -3.333333333 + 36

Reorder the terms:
36 + -12x + x2 = -3.333333333 + 36

Combine like terms: -3.333333333 + 36 = 32.666666667
36 + -12x + x2 = 32.666666667

Factor a perfect square on the left side:
(x + -6)(x + -6) = 32.666666667

Calculate the square root of the right side: 5.715476067

Break this problem into two subproblems by setting 
(x + -6) equal to 5.715476067 and -5.715476067.

Subproblem 1

x + -6 = 5.715476067 Simplifying x + -6 = 5.715476067 Reorder the terms: -6 + x = 5.715476067 Solving -6 + x = 5.715476067 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '6' to each side of the equation. -6 + 6 + x = 5.715476067 + 6 Combine like terms: -6 + 6 = 0 0 + x = 5.715476067 + 6 x = 5.715476067 + 6 Combine like terms: 5.715476067 + 6 = 11.715476067 x = 11.715476067 Simplifying x = 11.715476067

Subproblem 2

x + -6 = -5.715476067 Simplifying x + -6 = -5.715476067 Reorder the terms: -6 + x = -5.715476067 Solving -6 + x = -5.715476067 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '6' to each side of the equation. -6 + 6 + x = -5.715476067 + 6 Combine like terms: -6 + 6 = 0 0 + x = -5.715476067 + 6 x = -5.715476067 + 6 Combine like terms: -5.715476067 + 6 = 0.284523933 x = 0.284523933 Simplifying x = 0.284523933

Solution

The solution to the problem is based on the solutions from the subproblems. x = {11.715476067, 0.284523933}

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