(5z-2)(8-z)=0

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Solution for (5z-2)(8-z)=0 equation: 


Simplifying
(5z + -2)(8 + -1z) = 0

Reorder the terms:
(-2 + 5z)(8 + -1z) = 0

Multiply (-2 + 5z) * (8 + -1z)
(-2(8 + -1z) + 5z * (8 + -1z)) = 0
((8 * -2 + -1z * -2) + 5z * (8 + -1z)) = 0
((-16 + 2z) + 5z * (8 + -1z)) = 0
(-16 + 2z + (8 * 5z + -1z * 5z)) = 0
(-16 + 2z + (40z + -5z2)) = 0

Combine like terms: 2z + 40z = 42z
(-16 + 42z + -5z2) = 0

Solving
-16 + 42z + -5z2 = 0

Solving for variable 'z'.

Factor a trinomial.
(-8 + z)(2 + -5z) = 0


Subproblem 1
Set the factor '(-8 + z)' equal to zero and attempt to solve:

Simplifying
-8 + z = 0

Solving
-8 + z = 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 + z = 0 + 8

Combine like terms: -8 + 8 = 0
0 + z = 0 + 8
z = 0 + 8

Combine like terms: 0 + 8 = 8
z = 8

Simplifying
z = 8

Subproblem 2
Set the factor '(2 + -5z)' equal to zero and attempt to solve:

Simplifying
2 + -5z = 0

Solving
2 + -5z = 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 + -5z = 0 + -2

Combine like terms: 2 + -2 = 0
0 + -5z = 0 + -2
-5z = 0 + -2

Combine like terms: 0 + -2 = -2
-5z = -2

Divide each side by '-5'.
z = 0.4

Simplifying
z = 0.4
Solution
z = {8, 0.4}

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