x+2(x+1)+x^2=

Solution for x+2(x+1)+x^2= equation:

Simplifying
x + 2(x + 1) + x2 = 0

Reorder the terms:
x + 2(1 + x) + x2 = 0
x + (1 * 2 + x * 2) + x2 = 0
x + (2 + 2x) + x2 = 0

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

Combine like terms: x + 2x = 3x
2 + 3x + x2 = 0

Solving
2 + 3x + x2 = 0

Solving for variable 'x'.

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

Subproblem 1
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
Subproblem 2
Set the factor '(1 + x)' equal to zero and attempt to solve:

Simplifying
1 + x = 0

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

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

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

Simplifying
x = -1
Solution
x = {-2, -1}