2x^2-1x-3=294

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Solution for 2x^2-1x-3=294 equation:


Simplifying
2x2 + -1x + -3 = 294

Reorder the terms:
-3 + -1x + 2x2 = 294

Solving
-3 + -1x + 2x2 = 294

Solving for variable 'x'.

Reorder the terms:
-3 + -294 + -1x + 2x2 = 294 + -294

Combine like terms: -3 + -294 = -297
-297 + -1x + 2x2 = 294 + -294

Combine like terms: 294 + -294 = 0
-297 + -1x + 2x2 = 0

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

Divide each side by '2'.
-148.5 + -0.5x + x2 = 0

Move the constant term to the right:

Add '148.5' to each side of the equation.
-148.5 + -0.5x + 148.5 + x2 = 0 + 148.5

Reorder the terms:
-148.5 + 148.5 + -0.5x + x2 = 0 + 148.5

Combine like terms: -148.5 + 148.5 = 0.0
0.0 + -0.5x + x2 = 0 + 148.5
-0.5x + x2 = 0 + 148.5

Combine like terms: 0 + 148.5 = 148.5
-0.5x + x2 = 148.5

The x term is -0.5x.  Take half its coefficient (-0.25).
Square it (0.0625) and add it to both sides.

Add '0.0625' to each side of the equation.
-0.5x + 0.0625 + x2 = 148.5 + 0.0625

Reorder the terms:
0.0625 + -0.5x + x2 = 148.5 + 0.0625

Combine like terms: 148.5 + 0.0625 = 148.5625
0.0625 + -0.5x + x2 = 148.5625

Factor a perfect square on the left side:
(x + -0.25)(x + -0.25) = 148.5625

Calculate the square root of the right side: 12.188621743

Break this problem into two subproblems by setting 
(x + -0.25) equal to 12.188621743 and -12.188621743.

Subproblem 1

x + -0.25 = 12.188621743 Simplifying x + -0.25 = 12.188621743 Reorder the terms: -0.25 + x = 12.188621743 Solving -0.25 + x = 12.188621743 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.25' to each side of the equation. -0.25 + 0.25 + x = 12.188621743 + 0.25 Combine like terms: -0.25 + 0.25 = 0.00 0.00 + x = 12.188621743 + 0.25 x = 12.188621743 + 0.25 Combine like terms: 12.188621743 + 0.25 = 12.438621743 x = 12.438621743 Simplifying x = 12.438621743

Subproblem 2

x + -0.25 = -12.188621743 Simplifying x + -0.25 = -12.188621743 Reorder the terms: -0.25 + x = -12.188621743 Solving -0.25 + x = -12.188621743 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.25' to each side of the equation. -0.25 + 0.25 + x = -12.188621743 + 0.25 Combine like terms: -0.25 + 0.25 = 0.00 0.00 + x = -12.188621743 + 0.25 x = -12.188621743 + 0.25 Combine like terms: -12.188621743 + 0.25 = -11.938621743 x = -11.938621743 Simplifying x = -11.938621743

Solution

The solution to the problem is based on the solutions from the subproblems. x = {12.438621743, -11.938621743}

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