r^2-24r=5

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Solution for r^2-24r=5 equation:


Simplifying
r2 + -24r = 5

Reorder the terms:
-24r + r2 = 5

Solving
-24r + r2 = 5

Solving for variable 'r'.

Reorder the terms:
-5 + -24r + r2 = 5 + -5

Combine like terms: 5 + -5 = 0
-5 + -24r + r2 = 0

Begin completing the square.

Move the constant term to the right:

Add '5' to each side of the equation.
-5 + -24r + 5 + r2 = 0 + 5

Reorder the terms:
-5 + 5 + -24r + r2 = 0 + 5

Combine like terms: -5 + 5 = 0
0 + -24r + r2 = 0 + 5
-24r + r2 = 0 + 5

Combine like terms: 0 + 5 = 5
-24r + r2 = 5

The r term is -24r.  Take half its coefficient (-12).
Square it (144) and add it to both sides.

Add '144' to each side of the equation.
-24r + 144 + r2 = 5 + 144

Reorder the terms:
144 + -24r + r2 = 5 + 144

Combine like terms: 5 + 144 = 149
144 + -24r + r2 = 149

Factor a perfect square on the left side:
(r + -12)(r + -12) = 149

Calculate the square root of the right side: 12.206555616

Break this problem into two subproblems by setting 
(r + -12) equal to 12.206555616 and -12.206555616.

Subproblem 1

r + -12 = 12.206555616 Simplifying r + -12 = 12.206555616 Reorder the terms: -12 + r = 12.206555616 Solving -12 + r = 12.206555616 Solving for variable 'r'. Move all terms containing r to the left, all other terms to the right. Add '12' to each side of the equation. -12 + 12 + r = 12.206555616 + 12 Combine like terms: -12 + 12 = 0 0 + r = 12.206555616 + 12 r = 12.206555616 + 12 Combine like terms: 12.206555616 + 12 = 24.206555616 r = 24.206555616 Simplifying r = 24.206555616

Subproblem 2

r + -12 = -12.206555616 Simplifying r + -12 = -12.206555616 Reorder the terms: -12 + r = -12.206555616 Solving -12 + r = -12.206555616 Solving for variable 'r'. Move all terms containing r to the left, all other terms to the right. Add '12' to each side of the equation. -12 + 12 + r = -12.206555616 + 12 Combine like terms: -12 + 12 = 0 0 + r = -12.206555616 + 12 r = -12.206555616 + 12 Combine like terms: -12.206555616 + 12 = -0.206555616 r = -0.206555616 Simplifying r = -0.206555616

Solution

The solution to the problem is based on the solutions from the subproblems. r = {24.206555616, -0.206555616}

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