2x^2-45x-675=0

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Solution for 2x^2-45x-675=0 equation:


Simplifying
2x2 + -45x + -675 = 0

Reorder the terms:
-675 + -45x + 2x2 = 0

Solving
-675 + -45x + 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'.
-337.5 + -22.5x + x2 = 0

Move the constant term to the right:

Add '337.5' to each side of the equation.
-337.5 + -22.5x + 337.5 + x2 = 0 + 337.5

Reorder the terms:
-337.5 + 337.5 + -22.5x + x2 = 0 + 337.5

Combine like terms: -337.5 + 337.5 = 0.0
0.0 + -22.5x + x2 = 0 + 337.5
-22.5x + x2 = 0 + 337.5

Combine like terms: 0 + 337.5 = 337.5
-22.5x + x2 = 337.5

The x term is -22.5x.  Take half its coefficient (-11.25).
Square it (126.5625) and add it to both sides.

Add '126.5625' to each side of the equation.
-22.5x + 126.5625 + x2 = 337.5 + 126.5625

Reorder the terms:
126.5625 + -22.5x + x2 = 337.5 + 126.5625

Combine like terms: 337.5 + 126.5625 = 464.0625
126.5625 + -22.5x + x2 = 464.0625

Factor a perfect square on the left side:
(x + -11.25)(x + -11.25) = 464.0625

Calculate the square root of the right side: 21.542109925

Break this problem into two subproblems by setting 
(x + -11.25) equal to 21.542109925 and -21.542109925.

Subproblem 1

x + -11.25 = 21.542109925 Simplifying x + -11.25 = 21.542109925 Reorder the terms: -11.25 + x = 21.542109925 Solving -11.25 + x = 21.542109925 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '11.25' to each side of the equation. -11.25 + 11.25 + x = 21.542109925 + 11.25 Combine like terms: -11.25 + 11.25 = 0.00 0.00 + x = 21.542109925 + 11.25 x = 21.542109925 + 11.25 Combine like terms: 21.542109925 + 11.25 = 32.792109925 x = 32.792109925 Simplifying x = 32.792109925

Subproblem 2

x + -11.25 = -21.542109925 Simplifying x + -11.25 = -21.542109925 Reorder the terms: -11.25 + x = -21.542109925 Solving -11.25 + x = -21.542109925 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '11.25' to each side of the equation. -11.25 + 11.25 + x = -21.542109925 + 11.25 Combine like terms: -11.25 + 11.25 = 0.00 0.00 + x = -21.542109925 + 11.25 x = -21.542109925 + 11.25 Combine like terms: -21.542109925 + 11.25 = -10.292109925 x = -10.292109925 Simplifying x = -10.292109925

Solution

The solution to the problem is based on the solutions from the subproblems. x = {32.792109925, -10.292109925}

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