2k^2-5k-5=-7

Solution for 2k^2-5k-5=-7 equation:

Simplifying
2k2 + -5k + -5 = -7

Reorder the terms:
-5 + -5k + 2k2 = -7

Solving
-5 + -5k + 2k2 = -7

Solving for variable 'k'.

Reorder the terms:
-5 + 7 + -5k + 2k2 = -7 + 7

Combine like terms: -5 + 7 = 2
2 + -5k + 2k2 = -7 + 7

Combine like terms: -7 + 7 = 0
2 + -5k + 2k2 = 0

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

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

Simplifying
1 + -2k = 0

Solving
1 + -2k = 0

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

Add '-1' to each side of the equation.
1 + -1 + -2k = 0 + -1

Combine like terms: 1 + -1 = 0
0 + -2k = 0 + -1
-2k = 0 + -1

Combine like terms: 0 + -1 = -1
-2k = -1

Divide each side by '-2'.
k = 0.5

Simplifying
k = 0.5
Subproblem 2
Set the factor '(2 + -1k)' equal to zero and attempt to solve:

Simplifying
2 + -1k = 0

Solving
2 + -1k = 0

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

Add '-2' to each side of the equation.
2 + -2 + -1k = 0 + -2

Combine like terms: 2 + -2 = 0
0 + -1k = 0 + -2
-1k = 0 + -2

Combine like terms: 0 + -2 = -2
-1k = -2

Divide each side by '-1'.
k = 2

Simplifying
k = 2
Solution
k = {0.5, 2}