z(4z+5)(z+4)=

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Solution for z(4z+5)(z+4)= equation:


Simplifying
z(4z + 5)(z + 4) = 0

Reorder the terms:
z(5 + 4z)(z + 4) = 0

Reorder the terms:
z(5 + 4z)(4 + z) = 0

Multiply (5 + 4z) * (4 + z)
z(5(4 + z) + 4z * (4 + z)) = 0
z((4 * 5 + z * 5) + 4z * (4 + z)) = 0
z((20 + 5z) + 4z * (4 + z)) = 0
z(20 + 5z + (4 * 4z + z * 4z)) = 0
z(20 + 5z + (16z + 4z2)) = 0

Combine like terms: 5z + 16z = 21z
z(20 + 21z + 4z2) = 0
(20 * z + 21z * z + 4z2 * z) = 0
(20z + 21z2 + 4z3) = 0

Solving
20z + 21z2 + 4z3 = 0

Solving for variable 'z'.

Factor out the Greatest Common Factor (GCF), 'z'.
z(20 + 21z + 4z2) = 0

Factor a trinomial.
z((4 + z)(5 + 4z)) = 0

Subproblem 1

Set the factor 'z' equal to zero and attempt to solve: Simplifying z = 0 Solving z = 0 Move all terms containing z to the left, all other terms to the right. Simplifying z = 0

Subproblem 2

Set the factor '(4 + z)' equal to zero and attempt to solve: Simplifying 4 + z = 0 Solving 4 + z = 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 + z = 0 + -4 Combine like terms: 4 + -4 = 0 0 + z = 0 + -4 z = 0 + -4 Combine like terms: 0 + -4 = -4 z = -4 Simplifying z = -4

Subproblem 3

Set the factor '(5 + 4z)' equal to zero and attempt to solve: Simplifying 5 + 4z = 0 Solving 5 + 4z = 0 Move all terms containing z to the left, all other terms to the right. Add '-5' to each side of the equation. 5 + -5 + 4z = 0 + -5 Combine like terms: 5 + -5 = 0 0 + 4z = 0 + -5 4z = 0 + -5 Combine like terms: 0 + -5 = -5 4z = -5 Divide each side by '4'. z = -1.25 Simplifying z = -1.25

Solution

z = {0, -4, -1.25}

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