1.5x^2=5.5x-2.2

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Solution for 1.5x^2=5.5x-2.2 equation:


Simplifying
1.5x2 = 5.5x + -2.2

Reorder the terms:
1.5x2 = -2.2 + 5.5x

Solving
1.5x2 = -2.2 + 5.5x

Solving for variable 'x'.

Reorder the terms:
2.2 + -5.5x + 1.5x2 = -2.2 + 5.5x + 2.2 + -5.5x

Reorder the terms:
2.2 + -5.5x + 1.5x2 = -2.2 + 2.2 + 5.5x + -5.5x

Combine like terms: -2.2 + 2.2 = 0.0
2.2 + -5.5x + 1.5x2 = 0.0 + 5.5x + -5.5x
2.2 + -5.5x + 1.5x2 = 5.5x + -5.5x

Combine like terms: 5.5x + -5.5x = 0.0
2.2 + -5.5x + 1.5x2 = 0.0

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

Divide each side by '1.5'.
1.466666667 + -3.666666667x + x2 = 0

Move the constant term to the right:

Add '-1.466666667' to each side of the equation.
1.466666667 + -3.666666667x + -1.466666667 + x2 = 0 + -1.466666667

Reorder the terms:
1.466666667 + -1.466666667 + -3.666666667x + x2 = 0 + -1.466666667

Combine like terms: 1.466666667 + -1.466666667 = 0.000000000
0.000000000 + -3.666666667x + x2 = 0 + -1.466666667
-3.666666667x + x2 = 0 + -1.466666667

Combine like terms: 0 + -1.466666667 = -1.466666667
-3.666666667x + x2 = -1.466666667

The x term is -3.666666667x.  Take half its coefficient (-1.833333334).
Square it (3.361111114) and add it to both sides.

Add '3.361111114' to each side of the equation.
-3.666666667x + 3.361111114 + x2 = -1.466666667 + 3.361111114

Reorder the terms:
3.361111114 + -3.666666667x + x2 = -1.466666667 + 3.361111114

Combine like terms: -1.466666667 + 3.361111114 = 1.894444447
3.361111114 + -3.666666667x + x2 = 1.894444447

Factor a perfect square on the left side:
(x + -1.833333334)(x + -1.833333334) = 1.894444447

Calculate the square root of the right side: 1.376388189

Break this problem into two subproblems by setting 
(x + -1.833333334) equal to 1.376388189 and -1.376388189.

Subproblem 1

x + -1.833333334 = 1.376388189 Simplifying x + -1.833333334 = 1.376388189 Reorder the terms: -1.833333334 + x = 1.376388189 Solving -1.833333334 + x = 1.376388189 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.833333334' to each side of the equation. -1.833333334 + 1.833333334 + x = 1.376388189 + 1.833333334 Combine like terms: -1.833333334 + 1.833333334 = 0.000000000 0.000000000 + x = 1.376388189 + 1.833333334 x = 1.376388189 + 1.833333334 Combine like terms: 1.376388189 + 1.833333334 = 3.209721523 x = 3.209721523 Simplifying x = 3.209721523

Subproblem 2

x + -1.833333334 = -1.376388189 Simplifying x + -1.833333334 = -1.376388189 Reorder the terms: -1.833333334 + x = -1.376388189 Solving -1.833333334 + x = -1.376388189 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.833333334' to each side of the equation. -1.833333334 + 1.833333334 + x = -1.376388189 + 1.833333334 Combine like terms: -1.833333334 + 1.833333334 = 0.000000000 0.000000000 + x = -1.376388189 + 1.833333334 x = -1.376388189 + 1.833333334 Combine like terms: -1.376388189 + 1.833333334 = 0.456945145 x = 0.456945145 Simplifying x = 0.456945145

Solution

The solution to the problem is based on the solutions from the subproblems. x = {3.209721523, 0.456945145}

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