27=100x-2x^2

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Solution for 27=100x-2x^2 equation:


Simplifying
27 = 100x + -2x2

Solving
27 = 100x + -2x2

Solving for variable 'x'.

Reorder the terms:
27 + -100x + 2x2 = 100x + -100x + -2x2 + 2x2

Combine like terms: 100x + -100x = 0
27 + -100x + 2x2 = 0 + -2x2 + 2x2
27 + -100x + 2x2 = -2x2 + 2x2

Combine like terms: -2x2 + 2x2 = 0
27 + -100x + 2x2 = 0

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

Divide each side by '2'.
13.5 + -50x + x2 = 0

Move the constant term to the right:

Add '-13.5' to each side of the equation.
13.5 + -50x + -13.5 + x2 = 0 + -13.5

Reorder the terms:
13.5 + -13.5 + -50x + x2 = 0 + -13.5

Combine like terms: 13.5 + -13.5 = 0.0
0.0 + -50x + x2 = 0 + -13.5
-50x + x2 = 0 + -13.5

Combine like terms: 0 + -13.5 = -13.5
-50x + x2 = -13.5

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 = -13.5 + 625

Reorder the terms:
625 + -50x + x2 = -13.5 + 625

Combine like terms: -13.5 + 625 = 611.5
625 + -50x + x2 = 611.5

Factor a perfect square on the left side:
(x + -25)(x + -25) = 611.5

Calculate the square root of the right side: 24.728526038

Break this problem into two subproblems by setting 
(x + -25) equal to 24.728526038 and -24.728526038.

Subproblem 1

x + -25 = 24.728526038 Simplifying x + -25 = 24.728526038 Reorder the terms: -25 + x = 24.728526038 Solving -25 + x = 24.728526038 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 = 24.728526038 + 25 Combine like terms: -25 + 25 = 0 0 + x = 24.728526038 + 25 x = 24.728526038 + 25 Combine like terms: 24.728526038 + 25 = 49.728526038 x = 49.728526038 Simplifying x = 49.728526038

Subproblem 2

x + -25 = -24.728526038 Simplifying x + -25 = -24.728526038 Reorder the terms: -25 + x = -24.728526038 Solving -25 + x = -24.728526038 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 = -24.728526038 + 25 Combine like terms: -25 + 25 = 0 0 + x = -24.728526038 + 25 x = -24.728526038 + 25 Combine like terms: -24.728526038 + 25 = 0.271473962 x = 0.271473962 Simplifying x = 0.271473962

Solution

The solution to the problem is based on the solutions from the subproblems. x = {49.728526038, 0.271473962}

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