15x^2-22x+6=0

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Solution for 15x^2-22x+6=0 equation:


Simplifying
15x2 + -22x + 6 = 0

Reorder the terms:
6 + -22x + 15x2 = 0

Solving
6 + -22x + 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'.
0.4 + -1.466666667x + x2 = 0

Move the constant term to the right:

Add '-0.4' to each side of the equation.
0.4 + -1.466666667x + -0.4 + x2 = 0 + -0.4

Reorder the terms:
0.4 + -0.4 + -1.466666667x + x2 = 0 + -0.4

Combine like terms: 0.4 + -0.4 = 0.0
0.0 + -1.466666667x + x2 = 0 + -0.4
-1.466666667x + x2 = 0 + -0.4

Combine like terms: 0 + -0.4 = -0.4
-1.466666667x + x2 = -0.4

The x term is -1.466666667x.  Take half its coefficient (-0.7333333335).
Square it (0.5377777780) and add it to both sides.

Add '0.5377777780' to each side of the equation.
-1.466666667x + 0.5377777780 + x2 = -0.4 + 0.5377777780

Reorder the terms:
0.5377777780 + -1.466666667x + x2 = -0.4 + 0.5377777780

Combine like terms: -0.4 + 0.5377777780 = 0.137777778
0.5377777780 + -1.466666667x + x2 = 0.137777778

Factor a perfect square on the left side:
(x + -0.7333333335)(x + -0.7333333335) = 0.137777778

Calculate the square root of the right side: 0.371184291

Break this problem into two subproblems by setting 
(x + -0.7333333335) equal to 0.371184291 and -0.371184291.

Subproblem 1

x + -0.7333333335 = 0.371184291 Simplifying x + -0.7333333335 = 0.371184291 Reorder the terms: -0.7333333335 + x = 0.371184291 Solving -0.7333333335 + x = 0.371184291 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.7333333335' to each side of the equation. -0.7333333335 + 0.7333333335 + x = 0.371184291 + 0.7333333335 Combine like terms: -0.7333333335 + 0.7333333335 = 0.0000000000 0.0000000000 + x = 0.371184291 + 0.7333333335 x = 0.371184291 + 0.7333333335 Combine like terms: 0.371184291 + 0.7333333335 = 1.1045176245 x = 1.1045176245 Simplifying x = 1.1045176245

Subproblem 2

x + -0.7333333335 = -0.371184291 Simplifying x + -0.7333333335 = -0.371184291 Reorder the terms: -0.7333333335 + x = -0.371184291 Solving -0.7333333335 + x = -0.371184291 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.7333333335' to each side of the equation. -0.7333333335 + 0.7333333335 + x = -0.371184291 + 0.7333333335 Combine like terms: -0.7333333335 + 0.7333333335 = 0.0000000000 0.0000000000 + x = -0.371184291 + 0.7333333335 x = -0.371184291 + 0.7333333335 Combine like terms: -0.371184291 + 0.7333333335 = 0.3621490425 x = 0.3621490425 Simplifying x = 0.3621490425

Solution

The solution to the problem is based on the solutions from the subproblems. x = {1.1045176245, 0.3621490425}

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