(2r-5)(2r-2)=

Solution for (2r-5)(2r-2)= equation:

Simplifying
(2r + -5)(2r + -2) = 0

Reorder the terms:
(-5 + 2r)(2r + -2) = 0

Reorder the terms:
(-5 + 2r)(-2 + 2r) = 0

Multiply (-5 + 2r) * (-2 + 2r)
(-5(-2 + 2r) + 2r * (-2 + 2r)) = 0
((-2 * -5 + 2r * -5) + 2r * (-2 + 2r)) = 0
((10 + -10r) + 2r * (-2 + 2r)) = 0
(10 + -10r + (-2 * 2r + 2r * 2r)) = 0
(10 + -10r + (-4r + 4r2)) = 0

Combine like terms: -10r + -4r = -14r
(10 + -14r + 4r2) = 0

Solving
10 + -14r + 4r2 = 0

Solving for variable 'r'.

Factor out the Greatest Common Factor (GCF), '2'.
2(5 + -7r + 2r2) = 0

Factor a trinomial.
2((1 + -1r)(5 + -2r)) = 0

Ignore the factor 2.
Subproblem 1
Set the factor '(1 + -1r)' equal to zero and attempt to solve:

Simplifying
1 + -1r = 0

Solving
1 + -1r = 0

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

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

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

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

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

Simplifying
r = 1
Subproblem 2
Set the factor '(5 + -2r)' equal to zero and attempt to solve:

Simplifying
5 + -2r = 0

Solving
5 + -2r = 0

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

Add '-5' to each side of the equation.
5 + -5 + -2r = 0 + -5

Combine like terms: 5 + -5 = 0
0 + -2r = 0 + -5
-2r = 0 + -5

Combine like terms: 0 + -5 = -5
-2r = -5

Divide each side by '-2'.
r = 2.5

Simplifying
r = 2.5
Solution
r = {1, 2.5}