2(x^2+x-4)=4

Solution for 2(x^2+x-4)=4 equation:

Simplifying
2(x2 + x + -4) = 4

Reorder the terms:
2(-4 + x + x2) = 4
(-4 * 2 + x * 2 + x2 * 2) = 4
(-8 + 2x + 2x2) = 4

Solving
-8 + 2x + 2x2 = 4

Solving for variable 'x'.

Reorder the terms:
-8 + -4 + 2x + 2x2 = 4 + -4

Combine like terms: -8 + -4 = -12
-12 + 2x + 2x2 = 4 + -4

Combine like terms: 4 + -4 = 0
-12 + 2x + 2x2 = 0

Factor out the Greatest Common Factor (GCF), '2'.
2(-6 + x + x2) = 0

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

Ignore the factor 2.
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 + -1x)' equal to zero and attempt to solve:

Simplifying
2 + -1x = 0

Solving
2 + -1x = 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 + -1x = 0 + -2

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

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

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

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