x^2-50x+100=8400

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Solution for x^2-50x+100=8400 equation:


Simplifying
x2 + -50x + 100 = 8400

Reorder the terms:
100 + -50x + x2 = 8400

Solving
100 + -50x + x2 = 8400

Solving for variable 'x'.

Reorder the terms:
100 + -8400 + -50x + x2 = 8400 + -8400

Combine like terms: 100 + -8400 = -8300
-8300 + -50x + x2 = 8400 + -8400

Combine like terms: 8400 + -8400 = 0
-8300 + -50x + x2 = 0

Begin completing the square.

Move the constant term to the right:

Add '8300' to each side of the equation.
-8300 + -50x + 8300 + x2 = 0 + 8300

Reorder the terms:
-8300 + 8300 + -50x + x2 = 0 + 8300

Combine like terms: -8300 + 8300 = 0
0 + -50x + x2 = 0 + 8300
-50x + x2 = 0 + 8300

Combine like terms: 0 + 8300 = 8300
-50x + x2 = 8300

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 = 8300 + 625

Reorder the terms:
625 + -50x + x2 = 8300 + 625

Combine like terms: 8300 + 625 = 8925
625 + -50x + x2 = 8925

Factor a perfect square on the left side:
(x + -25)(x + -25) = 8925

Calculate the square root of the right side: 94.472218138

Break this problem into two subproblems by setting 
(x + -25) equal to 94.472218138 and -94.472218138.

Subproblem 1

x + -25 = 94.472218138 Simplifying x + -25 = 94.472218138 Reorder the terms: -25 + x = 94.472218138 Solving -25 + x = 94.472218138 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 = 94.472218138 + 25 Combine like terms: -25 + 25 = 0 0 + x = 94.472218138 + 25 x = 94.472218138 + 25 Combine like terms: 94.472218138 + 25 = 119.472218138 x = 119.472218138 Simplifying x = 119.472218138

Subproblem 2

x + -25 = -94.472218138 Simplifying x + -25 = -94.472218138 Reorder the terms: -25 + x = -94.472218138 Solving -25 + x = -94.472218138 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 = -94.472218138 + 25 Combine like terms: -25 + 25 = 0 0 + x = -94.472218138 + 25 x = -94.472218138 + 25 Combine like terms: -94.472218138 + 25 = -69.472218138 x = -69.472218138 Simplifying x = -69.472218138

Solution

The solution to the problem is based on the solutions from the subproblems. x = {119.472218138, -69.472218138}

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