x^2-20x+37.5=0

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Solution for x^2-20x+37.5=0 equation:


Simplifying
x2 + -20x + 37.5 = 0

Reorder the terms:
37.5 + -20x + x2 = 0

Solving
37.5 + -20x + x2 = 0

Solving for variable 'x'.

Begin completing the square.

Move the constant term to the right:

Add '-37.5' to each side of the equation.
37.5 + -20x + -37.5 + x2 = 0 + -37.5

Reorder the terms:
37.5 + -37.5 + -20x + x2 = 0 + -37.5

Combine like terms: 37.5 + -37.5 = 0.0
0.0 + -20x + x2 = 0 + -37.5
-20x + x2 = 0 + -37.5

Combine like terms: 0 + -37.5 = -37.5
-20x + x2 = -37.5

The x term is -20x.  Take half its coefficient (-10).
Square it (100) and add it to both sides.

Add '100' to each side of the equation.
-20x + 100 + x2 = -37.5 + 100

Reorder the terms:
100 + -20x + x2 = -37.5 + 100

Combine like terms: -37.5 + 100 = 62.5
100 + -20x + x2 = 62.5

Factor a perfect square on the left side:
(x + -10)(x + -10) = 62.5

Calculate the square root of the right side: 7.90569415

Break this problem into two subproblems by setting 
(x + -10) equal to 7.90569415 and -7.90569415.

Subproblem 1

x + -10 = 7.90569415 Simplifying x + -10 = 7.90569415 Reorder the terms: -10 + x = 7.90569415 Solving -10 + x = 7.90569415 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '10' to each side of the equation. -10 + 10 + x = 7.90569415 + 10 Combine like terms: -10 + 10 = 0 0 + x = 7.90569415 + 10 x = 7.90569415 + 10 Combine like terms: 7.90569415 + 10 = 17.90569415 x = 17.90569415 Simplifying x = 17.90569415

Subproblem 2

x + -10 = -7.90569415 Simplifying x + -10 = -7.90569415 Reorder the terms: -10 + x = -7.90569415 Solving -10 + x = -7.90569415 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '10' to each side of the equation. -10 + 10 + x = -7.90569415 + 10 Combine like terms: -10 + 10 = 0 0 + x = -7.90569415 + 10 x = -7.90569415 + 10 Combine like terms: -7.90569415 + 10 = 2.09430585 x = 2.09430585 Simplifying x = 2.09430585

Solution

The solution to the problem is based on the solutions from the subproblems. x = {17.90569415, 2.09430585}

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