-x^2+4x+2=-.83x-3.83

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Solution for -x^2+4x+2=-.83x-3.83 equation:


Simplifying
-1x2 + 4x + 2 = -0.83x + -3.83

Reorder the terms:
2 + 4x + -1x2 = -0.83x + -3.83

Reorder the terms:
2 + 4x + -1x2 = -3.83 + -0.83x

Solving
2 + 4x + -1x2 = -3.83 + -0.83x

Solving for variable 'x'.

Reorder the terms:
2 + 3.83 + 4x + 0.83x + -1x2 = -3.83 + -0.83x + 3.83 + 0.83x

Combine like terms: 2 + 3.83 = 5.83
5.83 + 4x + 0.83x + -1x2 = -3.83 + -0.83x + 3.83 + 0.83x

Combine like terms: 4x + 0.83x = 4.83x
5.83 + 4.83x + -1x2 = -3.83 + -0.83x + 3.83 + 0.83x

Reorder the terms:
5.83 + 4.83x + -1x2 = -3.83 + 3.83 + -0.83x + 0.83x

Combine like terms: -3.83 + 3.83 = 0.00
5.83 + 4.83x + -1x2 = 0.00 + -0.83x + 0.83x
5.83 + 4.83x + -1x2 = -0.83x + 0.83x

Combine like terms: -0.83x + 0.83x = 0.00
5.83 + 4.83x + -1x2 = 0.00

Begin completing the square.  Divide all terms by
-1 the coefficient of the squared term: 

Divide each side by '-1'.
-5.83 + -4.83x + x2 = 0.00

Move the constant term to the right:

Add '5.83' to each side of the equation.
-5.83 + -4.83x + 5.83 + x2 = 0.00 + 5.83

Reorder the terms:
-5.83 + 5.83 + -4.83x + x2 = 0.00 + 5.83

Combine like terms: -5.83 + 5.83 = 0.00
0.00 + -4.83x + x2 = 0.00 + 5.83
-4.83x + x2 = 0.00 + 5.83

Combine like terms: 0.00 + 5.83 = 5.83
-4.83x + x2 = 5.83

The x term is -4.83x.  Take half its coefficient (-2.415).
Square it (5.832225) and add it to both sides.

Add '5.832225' to each side of the equation.
-4.83x + 5.832225 + x2 = 5.83 + 5.832225

Reorder the terms:
5.832225 + -4.83x + x2 = 5.83 + 5.832225

Combine like terms: 5.83 + 5.832225 = 11.662225
5.832225 + -4.83x + x2 = 11.662225

Factor a perfect square on the left side:
(x + -2.415)(x + -2.415) = 11.662225

Calculate the square root of the right side: 3.415

Break this problem into two subproblems by setting 
(x + -2.415) equal to 3.415 and -3.415.

Subproblem 1

x + -2.415 = 3.415 Simplifying x + -2.415 = 3.415 Reorder the terms: -2.415 + x = 3.415 Solving -2.415 + x = 3.415 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '2.415' to each side of the equation. -2.415 + 2.415 + x = 3.415 + 2.415 Combine like terms: -2.415 + 2.415 = 0.000 0.000 + x = 3.415 + 2.415 x = 3.415 + 2.415 Combine like terms: 3.415 + 2.415 = 5.83 x = 5.83 Simplifying x = 5.83

Subproblem 2

x + -2.415 = -3.415 Simplifying x + -2.415 = -3.415 Reorder the terms: -2.415 + x = -3.415 Solving -2.415 + x = -3.415 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '2.415' to each side of the equation. -2.415 + 2.415 + x = -3.415 + 2.415 Combine like terms: -2.415 + 2.415 = 0.000 0.000 + x = -3.415 + 2.415 x = -3.415 + 2.415 Combine like terms: -3.415 + 2.415 = -1 x = -1 Simplifying x = -1

Solution

The solution to the problem is based on the solutions from the subproblems. x = {5.83, -1}

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