3(x*x+2x+1)-4=5

Solution for 3(x*x+2x+1)-4=5 equation:

Simplifying
3(x * x + 2x + 1) + -4 = 5

Multiply x * x
3(x2 + 2x + 1) + -4 = 5

Reorder the terms:
3(1 + 2x + x2) + -4 = 5
(1 * 3 + 2x * 3 + x2 * 3) + -4 = 5
(3 + 6x + 3x2) + -4 = 5

Reorder the terms:
3 + -4 + 6x + 3x2 = 5

Combine like terms: 3 + -4 = -1
-1 + 6x + 3x2 = 5

Solving
-1 + 6x + 3x2 = 5

Solving for variable 'x'.

Reorder the terms:
-1 + -5 + 6x + 3x2 = 5 + -5

Combine like terms: -1 + -5 = -6
-6 + 6x + 3x2 = 5 + -5

Combine like terms: 5 + -5 = 0
-6 + 6x + 3x2 = 0

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

Ignore the factor 3.
Subproblem 1
Set the factor '(-2 + 2x + x2)' equal to zero and attempt to solve:

Simplifying
-2 + 2x + x2 = 0

Solving
-2 + 2x + x2 = 0

Begin completing the square.

Move the constant term to the right:

Add '2' to each side of the equation.
-2 + 2x + 2 + x2 = 0 + 2

Reorder the terms:
-2 + 2 + 2x + x2 = 0 + 2

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

Combine like terms: 0 + 2 = 2
2x + x2 = 2

The x term is 2x.  Take half its coefficient (1).
Square it (1) and add it to both sides.

Add '1' to each side of the equation.
2x + 1 + x2 = 2 + 1

Reorder the terms:
1 + 2x + x2 = 2 + 1

Combine like terms: 2 + 1 = 3
1 + 2x + x2 = 3

Factor a perfect square on the left side:
(x + 1)(x + 1) = 3

Calculate the square root of the right side: 1.732050808

Break this problem into two subproblems by setting 
(x + 1) equal to 1.732050808 and -1.732050808.

Subproblem 1
x + 1 = 1.732050808

Simplifying
x + 1 = 1.732050808

Reorder the terms:
1 + x = 1.732050808

Solving
1 + x = 1.732050808

Solving for variable 'x'.

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

Add '-1' to each side of the equation.
1 + -1 + x = 1.732050808 + -1

Combine like terms: 1 + -1 = 0
0 + x = 1.732050808 + -1
x = 1.732050808 + -1

Combine like terms: 1.732050808 + -1 = 0.732050808
x = 0.732050808

Simplifying
x = 0.732050808

Subproblem 2
x + 1 = -1.732050808

Simplifying
x + 1 = -1.732050808

Reorder the terms:
1 + x = -1.732050808

Solving
1 + x = -1.732050808

Solving for variable 'x'.

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

Add '-1' to each side of the equation.
1 + -1 + x = -1.732050808 + -1

Combine like terms: 1 + -1 = 0
0 + x = -1.732050808 + -1
x = -1.732050808 + -1

Combine like terms: -1.732050808 + -1 = -2.732050808
x = -2.732050808

Simplifying
x = -2.732050808

Solution
The solution to the problem is based on the solutions
from the subproblems.
x = {0.732050808, -2.732050808}
Solution
x = {0.732050808, -2.732050808}