-z^2+8z=16

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Solution for -z^2+8z=16 equation:


Simplifying
-1z2 + 8z = 16

Reorder the terms:
8z + -1z2 = 16

Solving
8z + -1z2 = 16

Solving for variable 'z'.

Reorder the terms:
-16 + 8z + -1z2 = 16 + -16

Combine like terms: 16 + -16 = 0
-16 + 8z + -1z2 = 0

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

Subproblem 1

Set the factor '(-4 + z)' equal to zero and attempt to solve: Simplifying -4 + z = 0 Solving -4 + z = 0 Move all terms containing z to the left, all other terms to the right. Add '4' to each side of the equation. -4 + 4 + z = 0 + 4 Combine like terms: -4 + 4 = 0 0 + z = 0 + 4 z = 0 + 4 Combine like terms: 0 + 4 = 4 z = 4 Simplifying z = 4

Subproblem 2

Set the factor '(4 + -1z)' equal to zero and attempt to solve: Simplifying 4 + -1z = 0 Solving 4 + -1z = 0 Move all terms containing z to the left, all other terms to the right. Add '-4' to each side of the equation. 4 + -4 + -1z = 0 + -4 Combine like terms: 4 + -4 = 0 0 + -1z = 0 + -4 -1z = 0 + -4 Combine like terms: 0 + -4 = -4 -1z = -4 Divide each side by '-1'. z = 4 Simplifying z = 4

Solution

z = {4, 4}

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