633024=6.28r^2+101.736r

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Solution for 633024=6.28r^2+101.736r equation:


Simplifying
633024 = 6.28r2 + 101.736r

Reorder the terms:
633024 = 101.736r + 6.28r2

Solving
633024 = 101.736r + 6.28r2

Solving for variable 'r'.

Reorder the terms:
633024 + -101.736r + -6.28r2 = 101.736r + -101.736r + 6.28r2 + -6.28r2

Combine like terms: 101.736r + -101.736r = 0.000
633024 + -101.736r + -6.28r2 = 0.000 + 6.28r2 + -6.28r2
633024 + -101.736r + -6.28r2 = 6.28r2 + -6.28r2

Combine like terms: 6.28r2 + -6.28r2 = 0.00
633024 + -101.736r + -6.28r2 = 0.00

Begin completing the square.  Divide all terms by
-6.28 the coefficient of the squared term: 

Divide each side by '-6.28'.
-100800 + 16.2r + r2 = 0

Move the constant term to the right:

Add '100800' to each side of the equation.
-100800 + 16.2r + 100800 + r2 = 0 + 100800

Reorder the terms:
-100800 + 100800 + 16.2r + r2 = 0 + 100800

Combine like terms: -100800 + 100800 = 0
0 + 16.2r + r2 = 0 + 100800
16.2r + r2 = 0 + 100800

Combine like terms: 0 + 100800 = 100800
16.2r + r2 = 100800

The r term is 16.2r.  Take half its coefficient (8.1).
Square it (65.61) and add it to both sides.

Add '65.61' to each side of the equation.
16.2r + 65.61 + r2 = 100800 + 65.61

Reorder the terms:
65.61 + 16.2r + r2 = 100800 + 65.61

Combine like terms: 100800 + 65.61 = 100865.61
65.61 + 16.2r + r2 = 100865.61

Factor a perfect square on the left side:
(r + 8.1)(r + 8.1) = 100865.61

Calculate the square root of the right side: 317.593466557

Break this problem into two subproblems by setting 
(r + 8.1) equal to 317.593466557 and -317.593466557.

Subproblem 1

r + 8.1 = 317.593466557 Simplifying r + 8.1 = 317.593466557 Reorder the terms: 8.1 + r = 317.593466557 Solving 8.1 + r = 317.593466557 Solving for variable 'r'. Move all terms containing r to the left, all other terms to the right. Add '-8.1' to each side of the equation. 8.1 + -8.1 + r = 317.593466557 + -8.1 Combine like terms: 8.1 + -8.1 = 0.0 0.0 + r = 317.593466557 + -8.1 r = 317.593466557 + -8.1 Combine like terms: 317.593466557 + -8.1 = 309.493466557 r = 309.493466557 Simplifying r = 309.493466557

Subproblem 2

r + 8.1 = -317.593466557 Simplifying r + 8.1 = -317.593466557 Reorder the terms: 8.1 + r = -317.593466557 Solving 8.1 + r = -317.593466557 Solving for variable 'r'. Move all terms containing r to the left, all other terms to the right. Add '-8.1' to each side of the equation. 8.1 + -8.1 + r = -317.593466557 + -8.1 Combine like terms: 8.1 + -8.1 = 0.0 0.0 + r = -317.593466557 + -8.1 r = -317.593466557 + -8.1 Combine like terms: -317.593466557 + -8.1 = -325.693466557 r = -325.693466557 Simplifying r = -325.693466557

Solution

The solution to the problem is based on the solutions from the subproblems. r = {309.493466557, -325.693466557}

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