(5+z)(5z-8)=0

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Solution for (5+z)(5z-8)=0 equation:


Simplifying
(5 + z)(5z + -8) = 0

Reorder the terms:
(5 + z)(-8 + 5z) = 0

Multiply (5 + z) * (-8 + 5z)
(5(-8 + 5z) + z(-8 + 5z)) = 0
((-8 * 5 + 5z * 5) + z(-8 + 5z)) = 0
((-40 + 25z) + z(-8 + 5z)) = 0
(-40 + 25z + (-8 * z + 5z * z)) = 0
(-40 + 25z + (-8z + 5z2)) = 0

Combine like terms: 25z + -8z = 17z
(-40 + 17z + 5z2) = 0

Solving
-40 + 17z + 5z2 = 0

Solving for variable 'z'.

Factor a trinomial.
(-5 + -1z)(8 + -5z) = 0

Subproblem 1

Set the factor '(-5 + -1z)' equal to zero and attempt to solve: Simplifying -5 + -1z = 0 Solving -5 + -1z = 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 + -1z = 0 + 5 Combine like terms: -5 + 5 = 0 0 + -1z = 0 + 5 -1z = 0 + 5 Combine like terms: 0 + 5 = 5 -1z = 5 Divide each side by '-1'. z = -5 Simplifying z = -5

Subproblem 2

Set the factor '(8 + -5z)' equal to zero and attempt to solve: Simplifying 8 + -5z = 0 Solving 8 + -5z = 0 Move all terms containing z to the left, all other terms to the right. Add '-8' to each side of the equation. 8 + -8 + -5z = 0 + -8 Combine like terms: 8 + -8 = 0 0 + -5z = 0 + -8 -5z = 0 + -8 Combine like terms: 0 + -8 = -8 -5z = -8 Divide each side by '-5'. z = 1.6 Simplifying z = 1.6

Solution

z = {-5, 1.6}

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