50=18x-x^2

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Solution for 50=18x-x^2 equation:


Simplifying
50 = 18x + -1x2

Solving
50 = 18x + -1x2

Solving for variable 'x'.

Reorder the terms:
50 + -18x + x2 = 18x + -18x + -1x2 + x2

Combine like terms: 18x + -18x = 0
50 + -18x + x2 = 0 + -1x2 + x2
50 + -18x + x2 = -1x2 + x2

Combine like terms: -1x2 + x2 = 0
50 + -18x + x2 = 0

Begin completing the square.

Move the constant term to the right:

Add '-50' to each side of the equation.
50 + -18x + -50 + x2 = 0 + -50

Reorder the terms:
50 + -50 + -18x + x2 = 0 + -50

Combine like terms: 50 + -50 = 0
0 + -18x + x2 = 0 + -50
-18x + x2 = 0 + -50

Combine like terms: 0 + -50 = -50
-18x + x2 = -50

The x term is -18x.  Take half its coefficient (-9).
Square it (81) and add it to both sides.

Add '81' to each side of the equation.
-18x + 81 + x2 = -50 + 81

Reorder the terms:
81 + -18x + x2 = -50 + 81

Combine like terms: -50 + 81 = 31
81 + -18x + x2 = 31

Factor a perfect square on the left side:
(x + -9)(x + -9) = 31

Calculate the square root of the right side: 5.567764363

Break this problem into two subproblems by setting 
(x + -9) equal to 5.567764363 and -5.567764363.

Subproblem 1

x + -9 = 5.567764363 Simplifying x + -9 = 5.567764363 Reorder the terms: -9 + x = 5.567764363 Solving -9 + x = 5.567764363 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '9' to each side of the equation. -9 + 9 + x = 5.567764363 + 9 Combine like terms: -9 + 9 = 0 0 + x = 5.567764363 + 9 x = 5.567764363 + 9 Combine like terms: 5.567764363 + 9 = 14.567764363 x = 14.567764363 Simplifying x = 14.567764363

Subproblem 2

x + -9 = -5.567764363 Simplifying x + -9 = -5.567764363 Reorder the terms: -9 + x = -5.567764363 Solving -9 + x = -5.567764363 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '9' to each side of the equation. -9 + 9 + x = -5.567764363 + 9 Combine like terms: -9 + 9 = 0 0 + x = -5.567764363 + 9 x = -5.567764363 + 9 Combine like terms: -5.567764363 + 9 = 3.432235637 x = 3.432235637 Simplifying x = 3.432235637

Solution

The solution to the problem is based on the solutions from the subproblems. x = {14.567764363, 3.432235637}

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