c^2-2cf-8f^2=

Solution for c^2-2cf-8f^2= equation:

Simplifying
c2 + -2cf + -8f2 = 0

Reorder the terms:
-2cf + c2 + -8f2 = 0

Solving
-2cf + c2 + -8f2 = 0

Solving for variable 'c'.

Factor a trinomial.
(c + -4f)(c + 2f) = 0

Subproblem 1
Set the factor '(c + -4f)' equal to zero and attempt to solve:

Simplifying
c + -4f = 0

Solving
c + -4f = 0

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

Add '4f' to each side of the equation.
c + -4f + 4f = 0 + 4f

Combine like terms: -4f + 4f = 0
c + 0 = 0 + 4f
c = 0 + 4f
Remove the zero:
c = 4f

Simplifying
c = 4f
Subproblem 2
Set the factor '(c + 2f)' equal to zero and attempt to solve:

Simplifying
c + 2f = 0

Solving
c + 2f = 0

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

Add '-2f' to each side of the equation.
c + 2f + -2f = 0 + -2f

Combine like terms: 2f + -2f = 0
c + 0 = 0 + -2f
c = 0 + -2f
Remove the zero:
c = -2f

Simplifying
c = -2f
Solution
c = {4f, -2f}