82x-x^2=150

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Solution for 82x-x^2=150 equation:


Simplifying
82x + -1x2 = 150

Solving
82x + -1x2 = 150

Solving for variable 'x'.

Reorder the terms:
-150 + 82x + -1x2 = 150 + -150

Combine like terms: 150 + -150 = 0
-150 + 82x + -1x2 = 0

Begin completing the square.  Divide all terms by
-1 the coefficient of the squared term: 

Divide each side by '-1'.
150 + -82x + x2 = 0

Move the constant term to the right:

Add '-150' to each side of the equation.
150 + -82x + -150 + x2 = 0 + -150

Reorder the terms:
150 + -150 + -82x + x2 = 0 + -150

Combine like terms: 150 + -150 = 0
0 + -82x + x2 = 0 + -150
-82x + x2 = 0 + -150

Combine like terms: 0 + -150 = -150
-82x + x2 = -150

The x term is -82x.  Take half its coefficient (-41).
Square it (1681) and add it to both sides.

Add '1681' to each side of the equation.
-82x + 1681 + x2 = -150 + 1681

Reorder the terms:
1681 + -82x + x2 = -150 + 1681

Combine like terms: -150 + 1681 = 1531
1681 + -82x + x2 = 1531

Factor a perfect square on the left side:
(x + -41)(x + -41) = 1531

Calculate the square root of the right side: 39.127995093

Break this problem into two subproblems by setting 
(x + -41) equal to 39.127995093 and -39.127995093.

Subproblem 1

x + -41 = 39.127995093 Simplifying x + -41 = 39.127995093 Reorder the terms: -41 + x = 39.127995093 Solving -41 + x = 39.127995093 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '41' to each side of the equation. -41 + 41 + x = 39.127995093 + 41 Combine like terms: -41 + 41 = 0 0 + x = 39.127995093 + 41 x = 39.127995093 + 41 Combine like terms: 39.127995093 + 41 = 80.127995093 x = 80.127995093 Simplifying x = 80.127995093

Subproblem 2

x + -41 = -39.127995093 Simplifying x + -41 = -39.127995093 Reorder the terms: -41 + x = -39.127995093 Solving -41 + x = -39.127995093 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '41' to each side of the equation. -41 + 41 + x = -39.127995093 + 41 Combine like terms: -41 + 41 = 0 0 + x = -39.127995093 + 41 x = -39.127995093 + 41 Combine like terms: -39.127995093 + 41 = 1.872004907 x = 1.872004907 Simplifying x = 1.872004907

Solution

The solution to the problem is based on the solutions from the subproblems. x = {80.127995093, 1.872004907}

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