(4x+8)(x-3)=0

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Solution for (4x+8)(x-3)=0 equation:


Simplifying
(4x + 8)(x + -3) = 0

Reorder the terms:
(8 + 4x)(x + -3) = 0

Reorder the terms:
(8 + 4x)(-3 + x) = 0

Multiply (8 + 4x) * (-3 + x)
(8(-3 + x) + 4x * (-3 + x)) = 0
((-3 * 8 + x * 8) + 4x * (-3 + x)) = 0
((-24 + 8x) + 4x * (-3 + x)) = 0
(-24 + 8x + (-3 * 4x + x * 4x)) = 0
(-24 + 8x + (-12x + 4x2)) = 0

Combine like terms: 8x + -12x = -4x
(-24 + -4x + 4x2) = 0

Solving
-24 + -4x + 4x2 = 0

Solving for variable 'x'.

Factor out the Greatest Common Factor (GCF), '4'.
4(-6 + -1x + x2) = 0

Factor a trinomial.
4((-2 + -1x)(3 + -1x)) = 0

Ignore the factor 4.

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 '(3 + -1x)' equal to zero and attempt to solve: Simplifying 3 + -1x = 0 Solving 3 + -1x = 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 + -1x = 0 + -3 Combine like terms: 3 + -3 = 0 0 + -1x = 0 + -3 -1x = 0 + -3 Combine like terms: 0 + -3 = -3 -1x = -3 Divide each side by '-1'. x = 3 Simplifying x = 3

Solution

x = {-2, 3}

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