100*x^2-149*x-125=0

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Solution for 100*x^2-149*x-125=0 equation:


Simplifying
100x2 + -149x + -125 = 0

Reorder the terms:
-125 + -149x + 100x2 = 0

Solving
-125 + -149x + 100x2 = 0

Solving for variable 'x'.

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

Divide each side by '100'.
-1.25 + -1.49x + x2 = 0

Move the constant term to the right:

Add '1.25' to each side of the equation.
-1.25 + -1.49x + 1.25 + x2 = 0 + 1.25

Reorder the terms:
-1.25 + 1.25 + -1.49x + x2 = 0 + 1.25

Combine like terms: -1.25 + 1.25 = 0.00
0.00 + -1.49x + x2 = 0 + 1.25
-1.49x + x2 = 0 + 1.25

Combine like terms: 0 + 1.25 = 1.25
-1.49x + x2 = 1.25

The x term is -1.49x.  Take half its coefficient (-0.745).
Square it (0.555025) and add it to both sides.

Add '0.555025' to each side of the equation.
-1.49x + 0.555025 + x2 = 1.25 + 0.555025

Reorder the terms:
0.555025 + -1.49x + x2 = 1.25 + 0.555025

Combine like terms: 1.25 + 0.555025 = 1.805025
0.555025 + -1.49x + x2 = 1.805025

Factor a perfect square on the left side:
(x + -0.745)(x + -0.745) = 1.805025

Calculate the square root of the right side: 1.343512188

Break this problem into two subproblems by setting 
(x + -0.745) equal to 1.343512188 and -1.343512188.

Subproblem 1

x + -0.745 = 1.343512188 Simplifying x + -0.745 = 1.343512188 Reorder the terms: -0.745 + x = 1.343512188 Solving -0.745 + x = 1.343512188 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.745' to each side of the equation. -0.745 + 0.745 + x = 1.343512188 + 0.745 Combine like terms: -0.745 + 0.745 = 0.000 0.000 + x = 1.343512188 + 0.745 x = 1.343512188 + 0.745 Combine like terms: 1.343512188 + 0.745 = 2.088512188 x = 2.088512188 Simplifying x = 2.088512188

Subproblem 2

x + -0.745 = -1.343512188 Simplifying x + -0.745 = -1.343512188 Reorder the terms: -0.745 + x = -1.343512188 Solving -0.745 + x = -1.343512188 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.745' to each side of the equation. -0.745 + 0.745 + x = -1.343512188 + 0.745 Combine like terms: -0.745 + 0.745 = 0.000 0.000 + x = -1.343512188 + 0.745 x = -1.343512188 + 0.745 Combine like terms: -1.343512188 + 0.745 = -0.598512188 x = -0.598512188 Simplifying x = -0.598512188

Solution

The solution to the problem is based on the solutions from the subproblems. x = {2.088512188, -0.598512188}

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