x((2x-1)(x+4))=0

Solution for x((2x-1)(x+4))=0 equation:

Simplifying
x((2x + -1)(x + 4)) = 0

Reorder the terms:
x((-1 + 2x)(x + 4)) = 0

Reorder the terms:
x((-1 + 2x)(4 + x)) = 0

Multiply (-1 + 2x) * (4 + x)
x((-1(4 + x) + 2x * (4 + x))) = 0
x(((4 * -1 + x * -1) + 2x * (4 + x))) = 0
x(((-4 + -1x) + 2x * (4 + x))) = 0
x((-4 + -1x + (4 * 2x + x * 2x))) = 0
x((-4 + -1x + (8x + 2x2))) = 0

Combine like terms: -1x + 8x = 7x
x((-4 + 7x + 2x2)) = 0
(-4 * x + 7x * x + 2x2 * x) = 0
(-4x + 7x2 + 2x3) = 0

Solving
-4x + 7x2 + 2x3 = 0

Solving for variable 'x'.

Factor out the Greatest Common Factor (GCF), 'x'.
x(-4 + 7x + 2x2) = 0

Factor a trinomial.
x((-4 + -1x)(1 + -2x)) = 0

Subproblem 1
Set the factor 'x' equal to zero and attempt to solve:

Simplifying
x = 0

Solving
x = 0

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

Simplifying
x = 0
Subproblem 2
Set the factor '(-4 + -1x)' equal to zero and attempt to solve:

Simplifying
-4 + -1x = 0

Solving
-4 + -1x = 0

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

Add '4' to each side of the equation.
-4 + 4 + -1x = 0 + 4

Combine like terms: -4 + 4 = 0
0 + -1x = 0 + 4
-1x = 0 + 4

Combine like terms: 0 + 4 = 4
-1x = 4

Divide each side by '-1'.
x = -4

Simplifying
x = -4
Subproblem 3
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 = {0, -4, 0.5}