0=x^2-x-95

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Solution for 0=x^2-x-95 equation:


Simplifying
0 = x2 + -1x + -95

Reorder the terms:
0 = -95 + -1x + x2

Solving
0 = -95 + -1x + x2

Solving for variable 'x'.

Combine like terms: 0 + 95 = 95
95 + x + -1x2 = -95 + -1x + x2 + 95 + x + -1x2

Reorder the terms:
95 + x + -1x2 = -95 + 95 + -1x + x + x2 + -1x2

Combine like terms: -95 + 95 = 0
95 + x + -1x2 = 0 + -1x + x + x2 + -1x2
95 + x + -1x2 = -1x + x + x2 + -1x2

Combine like terms: -1x + x = 0
95 + x + -1x2 = 0 + x2 + -1x2
95 + x + -1x2 = x2 + -1x2

Combine like terms: x2 + -1x2 = 0
95 + x + -1x2 = 0

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

Divide each side by '-1'.
-95 + -1x + x2 = 0

Move the constant term to the right:

Add '95' to each side of the equation.
-95 + -1x + 95 + x2 = 0 + 95

Reorder the terms:
-95 + 95 + -1x + x2 = 0 + 95

Combine like terms: -95 + 95 = 0
0 + -1x + x2 = 0 + 95
-1x + x2 = 0 + 95

Combine like terms: 0 + 95 = 95
-1x + x2 = 95

The x term is x.  Take half its coefficient (0.5).
Square it (0.25) and add it to both sides.

Add '0.25' to each side of the equation.
-1x + 0.25 + x2 = 95 + 0.25

Reorder the terms:
0.25 + -1x + x2 = 95 + 0.25

Combine like terms: 95 + 0.25 = 95.25
0.25 + -1x + x2 = 95.25

Factor a perfect square on the left side:
(x + 0.5)(x + 0.5) = 95.25

Calculate the square root of the right side: 9.759610648

Break this problem into two subproblems by setting 
(x + 0.5) equal to 9.759610648 and -9.759610648.

Subproblem 1

x + 0.5 = 9.759610648 Simplifying x + 0.5 = 9.759610648 Reorder the terms: 0.5 + x = 9.759610648 Solving 0.5 + x = 9.759610648 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.5' to each side of the equation. 0.5 + -0.5 + x = 9.759610648 + -0.5 Combine like terms: 0.5 + -0.5 = 0.0 0.0 + x = 9.759610648 + -0.5 x = 9.759610648 + -0.5 Combine like terms: 9.759610648 + -0.5 = 9.259610648 x = 9.259610648 Simplifying x = 9.259610648

Subproblem 2

x + 0.5 = -9.759610648 Simplifying x + 0.5 = -9.759610648 Reorder the terms: 0.5 + x = -9.759610648 Solving 0.5 + x = -9.759610648 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.5' to each side of the equation. 0.5 + -0.5 + x = -9.759610648 + -0.5 Combine like terms: 0.5 + -0.5 = 0.0 0.0 + x = -9.759610648 + -0.5 x = -9.759610648 + -0.5 Combine like terms: -9.759610648 + -0.5 = -10.259610648 x = -10.259610648 Simplifying x = -10.259610648

Solution

The solution to the problem is based on the solutions from the subproblems. x = {9.259610648, -10.259610648}

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