2x^2-48x-69=0

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Solution for 2x^2-48x-69=0 equation:


Simplifying
2x2 + -48x + -69 = 0

Reorder the terms:
-69 + -48x + 2x2 = 0

Solving
-69 + -48x + 2x2 = 0

Solving for variable 'x'.

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

Divide each side by '2'.
-34.5 + -24x + x2 = 0

Move the constant term to the right:

Add '34.5' to each side of the equation.
-34.5 + -24x + 34.5 + x2 = 0 + 34.5

Reorder the terms:
-34.5 + 34.5 + -24x + x2 = 0 + 34.5

Combine like terms: -34.5 + 34.5 = 0.0
0.0 + -24x + x2 = 0 + 34.5
-24x + x2 = 0 + 34.5

Combine like terms: 0 + 34.5 = 34.5
-24x + x2 = 34.5

The x term is -24x.  Take half its coefficient (-12).
Square it (144) and add it to both sides.

Add '144' to each side of the equation.
-24x + 144 + x2 = 34.5 + 144

Reorder the terms:
144 + -24x + x2 = 34.5 + 144

Combine like terms: 34.5 + 144 = 178.5
144 + -24x + x2 = 178.5

Factor a perfect square on the left side:
(x + -12)(x + -12) = 178.5

Calculate the square root of the right side: 13.360389216

Break this problem into two subproblems by setting 
(x + -12) equal to 13.360389216 and -13.360389216.

Subproblem 1

x + -12 = 13.360389216 Simplifying x + -12 = 13.360389216 Reorder the terms: -12 + x = 13.360389216 Solving -12 + x = 13.360389216 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '12' to each side of the equation. -12 + 12 + x = 13.360389216 + 12 Combine like terms: -12 + 12 = 0 0 + x = 13.360389216 + 12 x = 13.360389216 + 12 Combine like terms: 13.360389216 + 12 = 25.360389216 x = 25.360389216 Simplifying x = 25.360389216

Subproblem 2

x + -12 = -13.360389216 Simplifying x + -12 = -13.360389216 Reorder the terms: -12 + x = -13.360389216 Solving -12 + x = -13.360389216 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '12' to each side of the equation. -12 + 12 + x = -13.360389216 + 12 Combine like terms: -12 + 12 = 0 0 + x = -13.360389216 + 12 x = -13.360389216 + 12 Combine like terms: -13.360389216 + 12 = -1.360389216 x = -1.360389216 Simplifying x = -1.360389216

Solution

The solution to the problem is based on the solutions from the subproblems. x = {25.360389216, -1.360389216}

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