4x^2+8x+4=16

Solution for 4x^2+8x+4=16 equation:

Simplifying
4x2 + 8x + 4 = 16

Reorder the terms:
4 + 8x + 4x2 = 16

Solving
4 + 8x + 4x2 = 16

Solving for variable 'x'.

Reorder the terms:
4 + -16 + 8x + 4x2 = 16 + -16

Combine like terms: 4 + -16 = -12
-12 + 8x + 4x2 = 16 + -16

Combine like terms: 16 + -16 = 0
-12 + 8x + 4x2 = 0

Factor out the Greatest Common Factor (GCF), '4'.
4(-3 + 2x + x2) = 0

Factor a trinomial.
4((-3 + -1x)(1 + -1x)) = 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 '(1 + -1x)' equal to zero and attempt to solve:

Simplifying
1 + -1x = 0

Solving
1 + -1x = 0

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

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

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

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

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

Simplifying
x = 1
Solution
x = {-3, 1}