-4x^2+4x+4=-20

Solution for -4x^2+4x+4=-20 equation:

Simplifying
-4x2 + 4x + 4 = -20

Reorder the terms:
4 + 4x + -4x2 = -20

Solving
4 + 4x + -4x2 = -20

Solving for variable 'x'.

Reorder the terms:
4 + 20 + 4x + -4x2 = -20 + 20

Combine like terms: 4 + 20 = 24
24 + 4x + -4x2 = -20 + 20

Combine like terms: -20 + 20 = 0
24 + 4x + -4x2 = 0

Factor out the Greatest Common Factor (GCF), '4'.
4(6 + x + -1x2) = 0

Factor a trinomial.
4((3 + -1x)(2 + x)) = 0

Ignore the factor 4.
Subproblem 1
Set the factor '(3 + -1x)' equal to zero and attempt to solve:

Simplifying
3 + -1x = 0

Solving
3 + -1x = 0

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

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

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

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

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

Simplifying
x = 3
Subproblem 2
Set the factor '(2 + x)' equal to zero and attempt to solve:

Simplifying
2 + x = 0

Solving
2 + x = 0

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

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

Combine like terms: 2 + -2 = 0
0 + x = 0 + -2
x = 0 + -2

Combine like terms: 0 + -2 = -2
x = -2

Simplifying
x = -2
Solution
x = {3, -2}