44798.2544=6.28r^2+1436.864r

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Solution for 44798.2544=6.28r^2+1436.864r equation:


Simplifying
44798.2544 = 6.28r2 + 1436.864r

Reorder the terms:
44798.2544 = 1436.864r + 6.28r2

Solving
44798.2544 = 1436.864r + 6.28r2

Solving for variable 'r'.

Reorder the terms:
44798.2544 + -1436.864r + -6.28r2 = 1436.864r + -1436.864r + 6.28r2 + -6.28r2

Combine like terms: 1436.864r + -1436.864r = 0.000
44798.2544 + -1436.864r + -6.28r2 = 0.000 + 6.28r2 + -6.28r2
44798.2544 + -1436.864r + -6.28r2 = 6.28r2 + -6.28r2

Combine like terms: 6.28r2 + -6.28r2 = 0.00
44798.2544 + -1436.864r + -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'.
-7133.48 + 228.8r + r2 = 0

Move the constant term to the right:

Add '7133.48' to each side of the equation.
-7133.48 + 228.8r + 7133.48 + r2 = 0 + 7133.48

Reorder the terms:
-7133.48 + 7133.48 + 228.8r + r2 = 0 + 7133.48

Combine like terms: -7133.48 + 7133.48 = 0.00
0.00 + 228.8r + r2 = 0 + 7133.48
228.8r + r2 = 0 + 7133.48

Combine like terms: 0 + 7133.48 = 7133.48
228.8r + r2 = 7133.48

The r term is 228.8r.  Take half its coefficient (114.4).
Square it (13087.36) and add it to both sides.

Add '13087.36' to each side of the equation.
228.8r + 13087.36 + r2 = 7133.48 + 13087.36

Reorder the terms:
13087.36 + 228.8r + r2 = 7133.48 + 13087.36

Combine like terms: 7133.48 + 13087.36 = 20220.84
13087.36 + 228.8r + r2 = 20220.84

Factor a perfect square on the left side:
(r + 114.4)(r + 114.4) = 20220.84

Calculate the square root of the right side: 142.2

Break this problem into two subproblems by setting 
(r + 114.4) equal to 142.2 and -142.2.

Subproblem 1

r + 114.4 = 142.2 Simplifying r + 114.4 = 142.2 Reorder the terms: 114.4 + r = 142.2 Solving 114.4 + r = 142.2 Solving for variable 'r'. Move all terms containing r to the left, all other terms to the right. Add '-114.4' to each side of the equation. 114.4 + -114.4 + r = 142.2 + -114.4 Combine like terms: 114.4 + -114.4 = 0.0 0.0 + r = 142.2 + -114.4 r = 142.2 + -114.4 Combine like terms: 142.2 + -114.4 = 27.8 r = 27.8 Simplifying r = 27.8

Subproblem 2

r + 114.4 = -142.2 Simplifying r + 114.4 = -142.2 Reorder the terms: 114.4 + r = -142.2 Solving 114.4 + r = -142.2 Solving for variable 'r'. Move all terms containing r to the left, all other terms to the right. Add '-114.4' to each side of the equation. 114.4 + -114.4 + r = -142.2 + -114.4 Combine like terms: 114.4 + -114.4 = 0.0 0.0 + r = -142.2 + -114.4 r = -142.2 + -114.4 Combine like terms: -142.2 + -114.4 = -256.6 r = -256.6 Simplifying r = -256.6

Solution

The solution to the problem is based on the solutions from the subproblems. r = {27.8, -256.6}

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