1.5x^2=4.75x-2.1

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Solution for 1.5x^2=4.75x-2.1 equation:


Simplifying
1.5x2 = 4.75x + -2.1

Reorder the terms:
1.5x2 = -2.1 + 4.75x

Solving
1.5x2 = -2.1 + 4.75x

Solving for variable 'x'.

Reorder the terms:
2.1 + -4.75x + 1.5x2 = -2.1 + 4.75x + 2.1 + -4.75x

Reorder the terms:
2.1 + -4.75x + 1.5x2 = -2.1 + 2.1 + 4.75x + -4.75x

Combine like terms: -2.1 + 2.1 = 0.0
2.1 + -4.75x + 1.5x2 = 0.0 + 4.75x + -4.75x
2.1 + -4.75x + 1.5x2 = 4.75x + -4.75x

Combine like terms: 4.75x + -4.75x = 0.00
2.1 + -4.75x + 1.5x2 = 0.00

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

Divide each side by '1.5'.
1.4 + -3.166666667x + x2 = 0.0

Move the constant term to the right:

Add '-1.4' to each side of the equation.
1.4 + -3.166666667x + -1.4 + x2 = 0.0 + -1.4

Reorder the terms:
1.4 + -1.4 + -3.166666667x + x2 = 0.0 + -1.4

Combine like terms: 1.4 + -1.4 = 0.0
0.0 + -3.166666667x + x2 = 0.0 + -1.4
-3.166666667x + x2 = 0.0 + -1.4

Combine like terms: 0.0 + -1.4 = -1.4
-3.166666667x + x2 = -1.4

The x term is -3.166666667x.  Take half its coefficient (-1.583333334).
Square it (2.506944447) and add it to both sides.

Add '2.506944447' to each side of the equation.
-3.166666667x + 2.506944447 + x2 = -1.4 + 2.506944447

Reorder the terms:
2.506944447 + -3.166666667x + x2 = -1.4 + 2.506944447

Combine like terms: -1.4 + 2.506944447 = 1.106944447
2.506944447 + -3.166666667x + x2 = 1.106944447

Factor a perfect square on the left side:
(x + -1.583333334)(x + -1.583333334) = 1.106944447

Calculate the square root of the right side: 1.052114275

Break this problem into two subproblems by setting 
(x + -1.583333334) equal to 1.052114275 and -1.052114275.

Subproblem 1

x + -1.583333334 = 1.052114275 Simplifying x + -1.583333334 = 1.052114275 Reorder the terms: -1.583333334 + x = 1.052114275 Solving -1.583333334 + x = 1.052114275 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.583333334' to each side of the equation. -1.583333334 + 1.583333334 + x = 1.052114275 + 1.583333334 Combine like terms: -1.583333334 + 1.583333334 = 0.000000000 0.000000000 + x = 1.052114275 + 1.583333334 x = 1.052114275 + 1.583333334 Combine like terms: 1.052114275 + 1.583333334 = 2.635447609 x = 2.635447609 Simplifying x = 2.635447609

Subproblem 2

x + -1.583333334 = -1.052114275 Simplifying x + -1.583333334 = -1.052114275 Reorder the terms: -1.583333334 + x = -1.052114275 Solving -1.583333334 + x = -1.052114275 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.583333334' to each side of the equation. -1.583333334 + 1.583333334 + x = -1.052114275 + 1.583333334 Combine like terms: -1.583333334 + 1.583333334 = 0.000000000 0.000000000 + x = -1.052114275 + 1.583333334 x = -1.052114275 + 1.583333334 Combine like terms: -1.052114275 + 1.583333334 = 0.531219059 x = 0.531219059 Simplifying x = 0.531219059

Solution

The solution to the problem is based on the solutions from the subproblems. x = {2.635447609, 0.531219059}

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