2x^2+18x+40=4

Solution for 2x^2+18x+40=4 equation:

Simplifying
2x2 + 18x + 40 = 4

Reorder the terms:
40 + 18x + 2x2 = 4

Solving
40 + 18x + 2x2 = 4

Solving for variable 'x'.

Reorder the terms:
40 + -4 + 18x + 2x2 = 4 + -4

Combine like terms: 40 + -4 = 36
36 + 18x + 2x2 = 4 + -4

Combine like terms: 4 + -4 = 0
36 + 18x + 2x2 = 0

Factor out the Greatest Common Factor (GCF), '2'.
2(18 + 9x + x2) = 0

Factor a trinomial.
2((6 + x)(3 + x)) = 0

Ignore the factor 2.
Subproblem 1
Set the factor '(6 + x)' equal to zero and attempt to solve:

Simplifying
6 + x = 0

Solving
6 + x = 0

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

Add '-6' to each side of the equation.
6 + -6 + x = 0 + -6

Combine like terms: 6 + -6 = 0
0 + x = 0 + -6
x = 0 + -6

Combine like terms: 0 + -6 = -6
x = -6

Simplifying
x = -6
Subproblem 2
Set the factor '(3 + x)' equal to zero and attempt to solve:

Simplifying
3 + x = 0

Solving
3 + x = 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 + x = 0 + -3

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

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

Simplifying
x = -3
Solution
x = {-6, -3}