-5.5x^2+275x-139=1906

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Solution for -5.5x^2+275x-139=1906 equation:


Simplifying
-5.5x2 + 275x + -139 = 1906

Reorder the terms:
-139 + 275x + -5.5x2 = 1906

Solving
-139 + 275x + -5.5x2 = 1906

Solving for variable 'x'.

Reorder the terms:
-139 + -1906 + 275x + -5.5x2 = 1906 + -1906

Combine like terms: -139 + -1906 = -2045
-2045 + 275x + -5.5x2 = 1906 + -1906

Combine like terms: 1906 + -1906 = 0
-2045 + 275x + -5.5x2 = 0

Begin completing the square.  Divide all terms by
-5.5 the coefficient of the squared term: 

Divide each side by '-5.5'.
371.8181818 + -50x + x2 = 0

Move the constant term to the right:

Add '-371.8181818' to each side of the equation.
371.8181818 + -50x + -371.8181818 + x2 = 0 + -371.8181818

Reorder the terms:
371.8181818 + -371.8181818 + -50x + x2 = 0 + -371.8181818

Combine like terms: 371.8181818 + -371.8181818 = 0.0000000
0.0000000 + -50x + x2 = 0 + -371.8181818
-50x + x2 = 0 + -371.8181818

Combine like terms: 0 + -371.8181818 = -371.8181818
-50x + x2 = -371.8181818

The x term is -50x.  Take half its coefficient (-25).
Square it (625) and add it to both sides.

Add '625' to each side of the equation.
-50x + 625 + x2 = -371.8181818 + 625

Reorder the terms:
625 + -50x + x2 = -371.8181818 + 625

Combine like terms: -371.8181818 + 625 = 253.1818182
625 + -50x + x2 = 253.1818182

Factor a perfect square on the left side:
(x + -25)(x + -25) = 253.1818182

Calculate the square root of the right side: 15.9116881

Break this problem into two subproblems by setting 
(x + -25) equal to 15.9116881 and -15.9116881.

Subproblem 1

x + -25 = 15.9116881 Simplifying x + -25 = 15.9116881 Reorder the terms: -25 + x = 15.9116881 Solving -25 + x = 15.9116881 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '25' to each side of the equation. -25 + 25 + x = 15.9116881 + 25 Combine like terms: -25 + 25 = 0 0 + x = 15.9116881 + 25 x = 15.9116881 + 25 Combine like terms: 15.9116881 + 25 = 40.9116881 x = 40.9116881 Simplifying x = 40.9116881

Subproblem 2

x + -25 = -15.9116881 Simplifying x + -25 = -15.9116881 Reorder the terms: -25 + x = -15.9116881 Solving -25 + x = -15.9116881 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '25' to each side of the equation. -25 + 25 + x = -15.9116881 + 25 Combine like terms: -25 + 25 = 0 0 + x = -15.9116881 + 25 x = -15.9116881 + 25 Combine like terms: -15.9116881 + 25 = 9.0883119 x = 9.0883119 Simplifying x = 9.0883119

Solution

The solution to the problem is based on the solutions from the subproblems. x = {40.9116881, 9.0883119}

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