200x^2-x-150=0

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Solution for 200x^2-x-150=0 equation:


Simplifying
200x2 + -1x + -150 = 0

Reorder the terms:
-150 + -1x + 200x2 = 0

Solving
-150 + -1x + 200x2 = 0

Solving for variable 'x'.

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

Divide each side by '200'.
-0.75 + -0.005x + x2 = 0

Move the constant term to the right:

Add '0.75' to each side of the equation.
-0.75 + -0.005x + 0.75 + x2 = 0 + 0.75

Reorder the terms:
-0.75 + 0.75 + -0.005x + x2 = 0 + 0.75

Combine like terms: -0.75 + 0.75 = 0.00
0.00 + -0.005x + x2 = 0 + 0.75
-0.005x + x2 = 0 + 0.75

Combine like terms: 0 + 0.75 = 0.75
-0.005x + x2 = 0.75

The x term is -0.005x.  Take half its coefficient (-0.0025).
Square it (0.00000625) and add it to both sides.

Add '0.00000625' to each side of the equation.
-0.005x + 0.00000625 + x2 = 0.75 + 0.00000625

Reorder the terms:
0.00000625 + -0.005x + x2 = 0.75 + 0.00000625

Combine like terms: 0.75 + 0.00000625 = 0.75000625
0.00000625 + -0.005x + x2 = 0.75000625

Factor a perfect square on the left side:
(x + -0.0025)(x + -0.0025) = 0.75000625

Calculate the square root of the right side: 0.866029012

Break this problem into two subproblems by setting 
(x + -0.0025) equal to 0.866029012 and -0.866029012.

Subproblem 1

x + -0.0025 = 0.866029012 Simplifying x + -0.0025 = 0.866029012 Reorder the terms: -0.0025 + x = 0.866029012 Solving -0.0025 + x = 0.866029012 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.0025' to each side of the equation. -0.0025 + 0.0025 + x = 0.866029012 + 0.0025 Combine like terms: -0.0025 + 0.0025 = 0.0000 0.0000 + x = 0.866029012 + 0.0025 x = 0.866029012 + 0.0025 Combine like terms: 0.866029012 + 0.0025 = 0.868529012 x = 0.868529012 Simplifying x = 0.868529012

Subproblem 2

x + -0.0025 = -0.866029012 Simplifying x + -0.0025 = -0.866029012 Reorder the terms: -0.0025 + x = -0.866029012 Solving -0.0025 + x = -0.866029012 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.0025' to each side of the equation. -0.0025 + 0.0025 + x = -0.866029012 + 0.0025 Combine like terms: -0.0025 + 0.0025 = 0.0000 0.0000 + x = -0.866029012 + 0.0025 x = -0.866029012 + 0.0025 Combine like terms: -0.866029012 + 0.0025 = -0.863529012 x = -0.863529012 Simplifying x = -0.863529012

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.868529012, -0.863529012}

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