2x(x+4)=x-3

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

Simplifying
2x(x + 4) = x + -3

Reorder the terms:
2x(4 + x) = x + -3
(4 * 2x + x * 2x) = x + -3
(8x + 2x2) = x + -3

Reorder the terms:
8x + 2x2 = -3 + x

Solving
8x + 2x2 = -3 + x

Solving for variable 'x'.

Reorder the terms:
3 + 8x + -1x + 2x2 = -3 + x + 3 + -1x

Combine like terms: 8x + -1x = 7x
3 + 7x + 2x2 = -3 + x + 3 + -1x

Reorder the terms:
3 + 7x + 2x2 = -3 + 3 + x + -1x

Combine like terms: -3 + 3 = 0
3 + 7x + 2x2 = 0 + x + -1x
3 + 7x + 2x2 = x + -1x

Combine like terms: x + -1x = 0
3 + 7x + 2x2 = 0

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

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

Simplifying
1 + 2x = 0

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

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

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

Divide each side by '2'.
x = -0.5

Simplifying
x = -0.5
Solution
x = {-3, -0.5}