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

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Solution for 3(z+5)(-z+8)=0 equation:


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

Reorder the terms:
3(5 + z)(-1z + 8) = 0

Reorder the terms:
3(5 + z)(8 + -1z) = 0

Multiply (5 + z) * (8 + -1z)
3(5(8 + -1z) + z(8 + -1z)) = 0
3((8 * 5 + -1z * 5) + z(8 + -1z)) = 0
3((40 + -5z) + z(8 + -1z)) = 0
3(40 + -5z + (8 * z + -1z * z)) = 0
3(40 + -5z + (8z + -1z2)) = 0

Combine like terms: -5z + 8z = 3z
3(40 + 3z + -1z2) = 0
(40 * 3 + 3z * 3 + -1z2 * 3) = 0
(120 + 9z + -3z2) = 0

Solving
120 + 9z + -3z2 = 0

Solving for variable 'z'.

Factor out the Greatest Common Factor (GCF), '3'.
3(40 + 3z + -1z2) = 0

Factor a trinomial.
3((8 + -1z)(5 + z)) = 0

Ignore the factor 3.

Subproblem 1

Set the factor '(8 + -1z)' equal to zero and attempt to solve: Simplifying 8 + -1z = 0 Solving 8 + -1z = 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 + -1z = 0 + -8 Combine like terms: 8 + -8 = 0 0 + -1z = 0 + -8 -1z = 0 + -8 Combine like terms: 0 + -8 = -8 -1z = -8 Divide each side by '-1'. z = 8 Simplifying z = 8

Subproblem 2

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

Solution

z = {8, -5}

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