1760+8x+.6x^2=100x-.4x^2

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Solution for 1760+8x+.6x^2=100x-.4x^2 equation:


Simplifying
1760 + 8x + 0.6x2 = 100x + -0.4x2

Solving
1760 + 8x + 0.6x2 = 100x + -0.4x2

Solving for variable 'x'.

Reorder the terms:
1760 + 8x + -100x + 0.6x2 + 0.4x2 = 100x + -0.4x2 + -100x + 0.4x2

Combine like terms: 8x + -100x = -92x
1760 + -92x + 0.6x2 + 0.4x2 = 100x + -0.4x2 + -100x + 0.4x2

Combine like terms: 0.6x2 + 0.4x2 = 1x2
1760 + -92x + 1x2 = 100x + -0.4x2 + -100x + 0.4x2

Reorder the terms:
1760 + -92x + 1x2 = 100x + -100x + -0.4x2 + 0.4x2

Combine like terms: 100x + -100x = 0
1760 + -92x + 1x2 = 0 + -0.4x2 + 0.4x2
1760 + -92x + 1x2 = -0.4x2 + 0.4x2

Combine like terms: -0.4x2 + 0.4x2 = 0.0
1760 + -92x + 1x2 = 0.0

Begin completing the square.

Move the constant term to the right:

Add '-1760' to each side of the equation.
1760 + -92x + -1760 + x2 = 0.0 + -1760

Reorder the terms:
1760 + -1760 + -92x + x2 = 0.0 + -1760

Combine like terms: 1760 + -1760 = 0
0 + -92x + x2 = 0.0 + -1760
-92x + x2 = 0.0 + -1760

Combine like terms: 0.0 + -1760 = -1760
-92x + x2 = -1760

The x term is -92x.  Take half its coefficient (-46).
Square it (2116) and add it to both sides.

Add '2116' to each side of the equation.
-92x + 2116 + x2 = -1760 + 2116

Reorder the terms:
2116 + -92x + x2 = -1760 + 2116

Combine like terms: -1760 + 2116 = 356
2116 + -92x + x2 = 356

Factor a perfect square on the left side:
(x + -46)(x + -46) = 356

Calculate the square root of the right side: 18.867962264

Break this problem into two subproblems by setting 
(x + -46) equal to 18.867962264 and -18.867962264.

Subproblem 1

x + -46 = 18.867962264 Simplifying x + -46 = 18.867962264 Reorder the terms: -46 + x = 18.867962264 Solving -46 + x = 18.867962264 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '46' to each side of the equation. -46 + 46 + x = 18.867962264 + 46 Combine like terms: -46 + 46 = 0 0 + x = 18.867962264 + 46 x = 18.867962264 + 46 Combine like terms: 18.867962264 + 46 = 64.867962264 x = 64.867962264 Simplifying x = 64.867962264

Subproblem 2

x + -46 = -18.867962264 Simplifying x + -46 = -18.867962264 Reorder the terms: -46 + x = -18.867962264 Solving -46 + x = -18.867962264 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '46' to each side of the equation. -46 + 46 + x = -18.867962264 + 46 Combine like terms: -46 + 46 = 0 0 + x = -18.867962264 + 46 x = -18.867962264 + 46 Combine like terms: -18.867962264 + 46 = 27.132037736 x = 27.132037736 Simplifying x = 27.132037736

Solution

The solution to the problem is based on the solutions from the subproblems. x = {64.867962264, 27.132037736}

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