x(x+2)(5x-4)=0

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Solution for x(x+2)(5x-4)=0 equation: 


Simplifying
x(x + 2)(5x + -4) = 0

Reorder the terms:
x(2 + x)(5x + -4) = 0

Reorder the terms:
x(2 + x)(-4 + 5x) = 0

Multiply (2 + x) * (-4 + 5x)
x(2(-4 + 5x) + x(-4 + 5x)) = 0
x((-4 * 2 + 5x * 2) + x(-4 + 5x)) = 0
x((-8 + 10x) + x(-4 + 5x)) = 0
x(-8 + 10x + (-4 * x + 5x * x)) = 0
x(-8 + 10x + (-4x + 5x2)) = 0

Combine like terms: 10x + -4x = 6x
x(-8 + 6x + 5x2) = 0
(-8 * x + 6x * x + 5x2 * x) = 0
(-8x + 6x2 + 5x3) = 0

Solving
-8x + 6x2 + 5x3 = 0

Solving for variable 'x'.

Factor out the Greatest Common Factor (GCF), 'x'.
x(-8 + 6x + 5x2) = 0

Factor a trinomial.
x((-2 + -1x)(4 + -5x)) = 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 '(-2 + -1x)' equal to zero and attempt to solve:

Simplifying
-2 + -1x = 0

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

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

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

Divide each side by '-1'.
x = -2

Simplifying
x = -2

Subproblem 3
Set the factor '(4 + -5x)' equal to zero and attempt to solve:

Simplifying
4 + -5x = 0

Solving
4 + -5x = 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 + -5x = 0 + -4

Combine like terms: 4 + -4 = 0
0 + -5x = 0 + -4
-5x = 0 + -4

Combine like terms: 0 + -4 = -4
-5x = -4

Divide each side by '-5'.
x = 0.8

Simplifying
x = 0.8
Solution
x = {0, -2, 0.8}

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