r^2=24-5r

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

Simplifying
r2 = 24 + -5r

Solving
r2 = 24 + -5r

Solving for variable 'r'.

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

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

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

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

Factor a trinomial.
(-8 + -1r)(3 + -1r) = 0

Subproblem 1
Set the factor '(-8 + -1r)' equal to zero and attempt to solve:

Simplifying
-8 + -1r = 0

Solving
-8 + -1r = 0

Move all terms containing r to the left, all other terms to the right.

Add '8' to each side of the equation.
-8 + 8 + -1r = 0 + 8

Combine like terms: -8 + 8 = 0
0 + -1r = 0 + 8
-1r = 0 + 8

Combine like terms: 0 + 8 = 8
-1r = 8

Divide each side by '-1'.
r = -8

Simplifying
r = -8
Subproblem 2
Set the factor '(3 + -1r)' equal to zero and attempt to solve:

Simplifying
3 + -1r = 0

Solving
3 + -1r = 0

Move all terms containing r to the left, all other terms to the right.

Add '-3' to each side of the equation.
3 + -3 + -1r = 0 + -3

Combine like terms: 3 + -3 = 0
0 + -1r = 0 + -3
-1r = 0 + -3

Combine like terms: 0 + -3 = -3
-1r = -3

Divide each side by '-1'.
r = 3

Simplifying
r = 3
Solution
r = {-8, 3}