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

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


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

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

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

Multiply (4 + 2x) * (-1 + 4x)
(4(-1 + 4x) + 2x * (-1 + 4x)) = 0
((-1 * 4 + 4x * 4) + 2x * (-1 + 4x)) = 0
((-4 + 16x) + 2x * (-1 + 4x)) = 0
(-4 + 16x + (-1 * 2x + 4x * 2x)) = 0
(-4 + 16x + (-2x + 8x2)) = 0

Combine like terms: 16x + -2x = 14x
(-4 + 14x + 8x2) = 0

Solving
-4 + 14x + 8x2 = 0

Solving for variable 'x'.

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

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

Ignore the factor 2.

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

Simplifying
1 + -4x = 0

Solving
1 + -4x = 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 + -4x = 0 + -1

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

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

Divide each side by '-4'.
x = 0.25

Simplifying
x = 0.25
Solution
x = {-2, 0.25}

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