5.7x^2-3.2x=2

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Solution for 5.7x^2-3.2x=2 equation:


Simplifying
5.7x2 + -3.2x = 2

Reorder the terms:
-3.2x + 5.7x2 = 2

Solving
-3.2x + 5.7x2 = 2

Solving for variable 'x'.

Reorder the terms:
-2 + -3.2x + 5.7x2 = 2 + -2

Combine like terms: 2 + -2 = 0
-2 + -3.2x + 5.7x2 = 0

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

Divide each side by '5.7'.
-0.350877193 + -0.5614035088x + x2 = 0

Move the constant term to the right:

Add '0.350877193' to each side of the equation.
-0.350877193 + -0.5614035088x + 0.350877193 + x2 = 0 + 0.350877193

Reorder the terms:
-0.350877193 + 0.350877193 + -0.5614035088x + x2 = 0 + 0.350877193

Combine like terms: -0.350877193 + 0.350877193 = 0.000000000
0.000000000 + -0.5614035088x + x2 = 0 + 0.350877193
-0.5614035088x + x2 = 0 + 0.350877193

Combine like terms: 0 + 0.350877193 = 0.350877193
-0.5614035088x + x2 = 0.350877193

The x term is -0.5614035088x.  Take half its coefficient (-0.2807017544).
Square it (0.07879347492) and add it to both sides.

Add '0.07879347492' to each side of the equation.
-0.5614035088x + 0.07879347492 + x2 = 0.350877193 + 0.07879347492

Reorder the terms:
0.07879347492 + -0.5614035088x + x2 = 0.350877193 + 0.07879347492

Combine like terms: 0.350877193 + 0.07879347492 = 0.42967066792
0.07879347492 + -0.5614035088x + x2 = 0.42967066792

Factor a perfect square on the left side:
(x + -0.2807017544)(x + -0.2807017544) = 0.42967066792

Calculate the square root of the right side: 0.655492691

Break this problem into two subproblems by setting 
(x + -0.2807017544) equal to 0.655492691 and -0.655492691.

Subproblem 1

x + -0.2807017544 = 0.655492691 Simplifying x + -0.2807017544 = 0.655492691 Reorder the terms: -0.2807017544 + x = 0.655492691 Solving -0.2807017544 + x = 0.655492691 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.2807017544' to each side of the equation. -0.2807017544 + 0.2807017544 + x = 0.655492691 + 0.2807017544 Combine like terms: -0.2807017544 + 0.2807017544 = 0.0000000000 0.0000000000 + x = 0.655492691 + 0.2807017544 x = 0.655492691 + 0.2807017544 Combine like terms: 0.655492691 + 0.2807017544 = 0.9361944454 x = 0.9361944454 Simplifying x = 0.9361944454

Subproblem 2

x + -0.2807017544 = -0.655492691 Simplifying x + -0.2807017544 = -0.655492691 Reorder the terms: -0.2807017544 + x = -0.655492691 Solving -0.2807017544 + x = -0.655492691 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.2807017544' to each side of the equation. -0.2807017544 + 0.2807017544 + x = -0.655492691 + 0.2807017544 Combine like terms: -0.2807017544 + 0.2807017544 = 0.0000000000 0.0000000000 + x = -0.655492691 + 0.2807017544 x = -0.655492691 + 0.2807017544 Combine like terms: -0.655492691 + 0.2807017544 = -0.3747909366 x = -0.3747909366 Simplifying x = -0.3747909366

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.9361944454, -0.3747909366}

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