(x^2)-(28x)-200=0

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Solution for (x^2)-(28x)-200=0 equation:


Simplifying
(x2) + -1(28x) + -200 = 0
x2 + -1(28x) + -200 = 0

Remove parenthesis around (28x)
x2 + -1 * 28x + -200 = 0

Multiply -1 * 28
x2 + -28x + -200 = 0

Reorder the terms:
-200 + -28x + x2 = 0

Solving
-200 + -28x + x2 = 0

Solving for variable 'x'.

Begin completing the square.

Move the constant term to the right:

Add '200' to each side of the equation.
-200 + -28x + 200 + x2 = 0 + 200

Reorder the terms:
-200 + 200 + -28x + x2 = 0 + 200

Combine like terms: -200 + 200 = 0
0 + -28x + x2 = 0 + 200
-28x + x2 = 0 + 200

Combine like terms: 0 + 200 = 200
-28x + x2 = 200

The x term is -28x.  Take half its coefficient (-14).
Square it (196) and add it to both sides.

Add '196' to each side of the equation.
-28x + 196 + x2 = 200 + 196

Reorder the terms:
196 + -28x + x2 = 200 + 196

Combine like terms: 200 + 196 = 396
196 + -28x + x2 = 396

Factor a perfect square on the left side:
(x + -14)(x + -14) = 396

Calculate the square root of the right side: 19.899748742

Break this problem into two subproblems by setting 
(x + -14) equal to 19.899748742 and -19.899748742.

Subproblem 1

x + -14 = 19.899748742 Simplifying x + -14 = 19.899748742 Reorder the terms: -14 + x = 19.899748742 Solving -14 + x = 19.899748742 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '14' to each side of the equation. -14 + 14 + x = 19.899748742 + 14 Combine like terms: -14 + 14 = 0 0 + x = 19.899748742 + 14 x = 19.899748742 + 14 Combine like terms: 19.899748742 + 14 = 33.899748742 x = 33.899748742 Simplifying x = 33.899748742

Subproblem 2

x + -14 = -19.899748742 Simplifying x + -14 = -19.899748742 Reorder the terms: -14 + x = -19.899748742 Solving -14 + x = -19.899748742 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '14' to each side of the equation. -14 + 14 + x = -19.899748742 + 14 Combine like terms: -14 + 14 = 0 0 + x = -19.899748742 + 14 x = -19.899748742 + 14 Combine like terms: -19.899748742 + 14 = -5.899748742 x = -5.899748742 Simplifying x = -5.899748742

Solution

The solution to the problem is based on the solutions from the subproblems. x = {33.899748742, -5.899748742}

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