8z^2-56z+80=0

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Solution for 8z^2-56z+80=0 equation:


Simplifying
8z2 + -56z + 80 = 0

Reorder the terms:
80 + -56z + 8z2 = 0

Solving
80 + -56z + 8z2 = 0

Solving for variable 'z'.

Factor out the Greatest Common Factor (GCF), '8'.
8(10 + -7z + z2) = 0

Factor a trinomial.
8((2 + -1z)(5 + -1z)) = 0

Ignore the factor 8.

Subproblem 1

Set the factor '(2 + -1z)' equal to zero and attempt to solve: Simplifying 2 + -1z = 0 Solving 2 + -1z = 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 + -1z = 0 + -2 Combine like terms: 2 + -2 = 0 0 + -1z = 0 + -2 -1z = 0 + -2 Combine like terms: 0 + -2 = -2 -1z = -2 Divide each side by '-1'. z = 2 Simplifying z = 2

Subproblem 2

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

Solution

z = {2, 5}

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