2235.87=85.9x+x^2

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Solution for 2235.87=85.9x+x^2 equation:


Simplifying
2235.87 = 85.9x + x2

Solving
2235.87 = 85.9x + x2

Solving for variable 'x'.

Reorder the terms:
2235.87 + -85.9x + -1x2 = 85.9x + -85.9x + x2 + -1x2

Combine like terms: 85.9x + -85.9x = 0.0
2235.87 + -85.9x + -1x2 = 0.0 + x2 + -1x2
2235.87 + -85.9x + -1x2 = x2 + -1x2

Combine like terms: x2 + -1x2 = 0
2235.87 + -85.9x + -1x2 = 0

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

Divide each side by '-1'.
-2235.87 + 85.9x + x2 = 0

Move the constant term to the right:

Add '2235.87' to each side of the equation.
-2235.87 + 85.9x + 2235.87 + x2 = 0 + 2235.87

Reorder the terms:
-2235.87 + 2235.87 + 85.9x + x2 = 0 + 2235.87

Combine like terms: -2235.87 + 2235.87 = 0.00
0.00 + 85.9x + x2 = 0 + 2235.87
85.9x + x2 = 0 + 2235.87

Combine like terms: 0 + 2235.87 = 2235.87
85.9x + x2 = 2235.87

The x term is 85.9x.  Take half its coefficient (42.95).
Square it (1844.7025) and add it to both sides.

Add '1844.7025' to each side of the equation.
85.9x + 1844.7025 + x2 = 2235.87 + 1844.7025

Reorder the terms:
1844.7025 + 85.9x + x2 = 2235.87 + 1844.7025

Combine like terms: 2235.87 + 1844.7025 = 4080.5725
1844.7025 + 85.9x + x2 = 4080.5725

Factor a perfect square on the left side:
(x + 42.95)(x + 42.95) = 4080.5725

Calculate the square root of the right side: 63.879358951

Break this problem into two subproblems by setting 
(x + 42.95) equal to 63.879358951 and -63.879358951.

Subproblem 1

x + 42.95 = 63.879358951 Simplifying x + 42.95 = 63.879358951 Reorder the terms: 42.95 + x = 63.879358951 Solving 42.95 + x = 63.879358951 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-42.95' to each side of the equation. 42.95 + -42.95 + x = 63.879358951 + -42.95 Combine like terms: 42.95 + -42.95 = 0.00 0.00 + x = 63.879358951 + -42.95 x = 63.879358951 + -42.95 Combine like terms: 63.879358951 + -42.95 = 20.929358951 x = 20.929358951 Simplifying x = 20.929358951

Subproblem 2

x + 42.95 = -63.879358951 Simplifying x + 42.95 = -63.879358951 Reorder the terms: 42.95 + x = -63.879358951 Solving 42.95 + x = -63.879358951 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-42.95' to each side of the equation. 42.95 + -42.95 + x = -63.879358951 + -42.95 Combine like terms: 42.95 + -42.95 = 0.00 0.00 + x = -63.879358951 + -42.95 x = -63.879358951 + -42.95 Combine like terms: -63.879358951 + -42.95 = -106.829358951 x = -106.829358951 Simplifying x = -106.829358951

Solution

The solution to the problem is based on the solutions from the subproblems. x = {20.929358951, -106.829358951}

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