(4z+8)(z-4)=

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Solution for (4z+8)(z-4)= equation:


Simplifying
(4z + 8)(z + -4) = 0

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

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

Multiply (8 + 4z) * (-4 + z)
(8(-4 + z) + 4z * (-4 + z)) = 0
((-4 * 8 + z * 8) + 4z * (-4 + z)) = 0
((-32 + 8z) + 4z * (-4 + z)) = 0
(-32 + 8z + (-4 * 4z + z * 4z)) = 0
(-32 + 8z + (-16z + 4z2)) = 0

Combine like terms: 8z + -16z = -8z
(-32 + -8z + 4z2) = 0

Solving
-32 + -8z + 4z2 = 0

Solving for variable 'z'.

Factor out the Greatest Common Factor (GCF), '4'.
4(-8 + -2z + z2) = 0

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

Ignore the factor 4.

Subproblem 1

Set the factor '(-2 + -1z)' equal to zero and attempt to solve: Simplifying -2 + -1z = 0 Solving -2 + -1z = 0 Move all terms containing z to the left, all other terms to the right. Add '2' to each side of the equation. -2 + 2 + -1z = 0 + 2 Combine like terms: -2 + 2 = 0 0 + -1z = 0 + 2 -1z = 0 + 2 Combine like terms: 0 + 2 = 2 -1z = 2 Divide each side by '-1'. z = -2 Simplifying z = -2

Subproblem 2

Set the factor '(4 + -1z)' equal to zero and attempt to solve: Simplifying 4 + -1z = 0 Solving 4 + -1z = 0 Move all terms containing z to the left, all other terms to the right. Add '-4' to each side of the equation. 4 + -4 + -1z = 0 + -4 Combine like terms: 4 + -4 = 0 0 + -1z = 0 + -4 -1z = 0 + -4 Combine like terms: 0 + -4 = -4 -1z = -4 Divide each side by '-1'. z = 4 Simplifying z = 4

Solution

z = {-2, 4}

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