9.5x+x^2=86

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Solution for 9.5x+x^2=86 equation:


Simplifying
9.5x + x2 = 86

Solving
9.5x + x2 = 86

Solving for variable 'x'.

Reorder the terms:
-86 + 9.5x + x2 = 86 + -86

Combine like terms: 86 + -86 = 0
-86 + 9.5x + x2 = 0

Begin completing the square.

Move the constant term to the right:

Add '86' to each side of the equation.
-86 + 9.5x + 86 + x2 = 0 + 86

Reorder the terms:
-86 + 86 + 9.5x + x2 = 0 + 86

Combine like terms: -86 + 86 = 0
0 + 9.5x + x2 = 0 + 86
9.5x + x2 = 0 + 86

Combine like terms: 0 + 86 = 86
9.5x + x2 = 86

The x term is 9.5x.  Take half its coefficient (4.75).
Square it (22.5625) and add it to both sides.

Add '22.5625' to each side of the equation.
9.5x + 22.5625 + x2 = 86 + 22.5625

Reorder the terms:
22.5625 + 9.5x + x2 = 86 + 22.5625

Combine like terms: 86 + 22.5625 = 108.5625
22.5625 + 9.5x + x2 = 108.5625

Factor a perfect square on the left side:
(x + 4.75)(x + 4.75) = 108.5625

Calculate the square root of the right side: 10.419332992

Break this problem into two subproblems by setting 
(x + 4.75) equal to 10.419332992 and -10.419332992.

Subproblem 1

x + 4.75 = 10.419332992 Simplifying x + 4.75 = 10.419332992 Reorder the terms: 4.75 + x = 10.419332992 Solving 4.75 + x = 10.419332992 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-4.75' to each side of the equation. 4.75 + -4.75 + x = 10.419332992 + -4.75 Combine like terms: 4.75 + -4.75 = 0.00 0.00 + x = 10.419332992 + -4.75 x = 10.419332992 + -4.75 Combine like terms: 10.419332992 + -4.75 = 5.669332992 x = 5.669332992 Simplifying x = 5.669332992

Subproblem 2

x + 4.75 = -10.419332992 Simplifying x + 4.75 = -10.419332992 Reorder the terms: 4.75 + x = -10.419332992 Solving 4.75 + x = -10.419332992 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-4.75' to each side of the equation. 4.75 + -4.75 + x = -10.419332992 + -4.75 Combine like terms: 4.75 + -4.75 = 0.00 0.00 + x = -10.419332992 + -4.75 x = -10.419332992 + -4.75 Combine like terms: -10.419332992 + -4.75 = -15.169332992 x = -15.169332992 Simplifying x = -15.169332992

Solution

The solution to the problem is based on the solutions from the subproblems. x = {5.669332992, -15.169332992}

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