(4z+5)(1-z)=0

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Solution for (4z+5)(1-z)=0 equation:


Simplifying
(4z + 5)(1 + -1z) = 0

Reorder the terms:
(5 + 4z)(1 + -1z) = 0

Multiply (5 + 4z) * (1 + -1z)
(5(1 + -1z) + 4z * (1 + -1z)) = 0
((1 * 5 + -1z * 5) + 4z * (1 + -1z)) = 0
((5 + -5z) + 4z * (1 + -1z)) = 0
(5 + -5z + (1 * 4z + -1z * 4z)) = 0
(5 + -5z + (4z + -4z2)) = 0

Combine like terms: -5z + 4z = -1z
(5 + -1z + -4z2) = 0

Solving
5 + -1z + -4z2 = 0

Solving for variable 'z'.

Factor a trinomial.
(1 + -1z)(5 + 4z) = 0

Subproblem 1

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

Subproblem 2

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 = {1, -1.25}

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