0=100x^2-30.7x-184

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Solution for 0=100x^2-30.7x-184 equation:


Simplifying
0 = 100x2 + -30.7x + -184

Reorder the terms:
0 = -184 + -30.7x + 100x2

Solving
0 = -184 + -30.7x + 100x2

Solving for variable 'x'.

Combine like terms: 0 + 184 = 184
184 + 30.7x + -100x2 = -184 + -30.7x + 100x2 + 184 + 30.7x + -100x2

Reorder the terms:
184 + 30.7x + -100x2 = -184 + 184 + -30.7x + 30.7x + 100x2 + -100x2

Combine like terms: -184 + 184 = 0
184 + 30.7x + -100x2 = 0 + -30.7x + 30.7x + 100x2 + -100x2
184 + 30.7x + -100x2 = -30.7x + 30.7x + 100x2 + -100x2

Combine like terms: -30.7x + 30.7x = 0.0
184 + 30.7x + -100x2 = 0.0 + 100x2 + -100x2
184 + 30.7x + -100x2 = 100x2 + -100x2

Combine like terms: 100x2 + -100x2 = 0
184 + 30.7x + -100x2 = 0

Begin completing the square.  Divide all terms by
-100 the coefficient of the squared term: 

Divide each side by '-100'.
-1.84 + -0.307x + x2 = 0

Move the constant term to the right:

Add '1.84' to each side of the equation.
-1.84 + -0.307x + 1.84 + x2 = 0 + 1.84

Reorder the terms:
-1.84 + 1.84 + -0.307x + x2 = 0 + 1.84

Combine like terms: -1.84 + 1.84 = 0.00
0.00 + -0.307x + x2 = 0 + 1.84
-0.307x + x2 = 0 + 1.84

Combine like terms: 0 + 1.84 = 1.84
-0.307x + x2 = 1.84

The x term is -0.307x.  Take half its coefficient (-0.1535).
Square it (0.02356225) and add it to both sides.

Add '0.02356225' to each side of the equation.
-0.307x + 0.02356225 + x2 = 1.84 + 0.02356225

Reorder the terms:
0.02356225 + -0.307x + x2 = 1.84 + 0.02356225

Combine like terms: 1.84 + 0.02356225 = 1.86356225
0.02356225 + -0.307x + x2 = 1.86356225

Factor a perfect square on the left side:
(x + -0.1535)(x + -0.1535) = 1.86356225

Calculate the square root of the right side: 1.365123529

Break this problem into two subproblems by setting 
(x + -0.1535) equal to 1.365123529 and -1.365123529.

Subproblem 1

x + -0.1535 = 1.365123529 Simplifying x + -0.1535 = 1.365123529 Reorder the terms: -0.1535 + x = 1.365123529 Solving -0.1535 + x = 1.365123529 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.1535' to each side of the equation. -0.1535 + 0.1535 + x = 1.365123529 + 0.1535 Combine like terms: -0.1535 + 0.1535 = 0.0000 0.0000 + x = 1.365123529 + 0.1535 x = 1.365123529 + 0.1535 Combine like terms: 1.365123529 + 0.1535 = 1.518623529 x = 1.518623529 Simplifying x = 1.518623529

Subproblem 2

x + -0.1535 = -1.365123529 Simplifying x + -0.1535 = -1.365123529 Reorder the terms: -0.1535 + x = -1.365123529 Solving -0.1535 + x = -1.365123529 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.1535' to each side of the equation. -0.1535 + 0.1535 + x = -1.365123529 + 0.1535 Combine like terms: -0.1535 + 0.1535 = 0.0000 0.0000 + x = -1.365123529 + 0.1535 x = -1.365123529 + 0.1535 Combine like terms: -1.365123529 + 0.1535 = -1.211623529 x = -1.211623529 Simplifying x = -1.211623529

Solution

The solution to the problem is based on the solutions from the subproblems. x = {1.518623529, -1.211623529}

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