9z^2-18z-16=0

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Solution for 9z^2-18z-16=0 equation:


Simplifying
9z2 + -18z + -16 = 0

Reorder the terms:
-16 + -18z + 9z2 = 0

Solving
-16 + -18z + 9z2 = 0

Solving for variable 'z'.

Factor a trinomial.
(-2 + -3z)(8 + -3z) = 0

Subproblem 1

Set the factor '(-2 + -3z)' equal to zero and attempt to solve: Simplifying -2 + -3z = 0 Solving -2 + -3z = 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 + -3z = 0 + 2 Combine like terms: -2 + 2 = 0 0 + -3z = 0 + 2 -3z = 0 + 2 Combine like terms: 0 + 2 = 2 -3z = 2 Divide each side by '-3'. z = -0.6666666667 Simplifying z = -0.6666666667

Subproblem 2

Set the factor '(8 + -3z)' equal to zero and attempt to solve: Simplifying 8 + -3z = 0 Solving 8 + -3z = 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 + -3z = 0 + -8 Combine like terms: 8 + -8 = 0 0 + -3z = 0 + -8 -3z = 0 + -8 Combine like terms: 0 + -8 = -8 -3z = -8 Divide each side by '-3'. z = 2.666666667 Simplifying z = 2.666666667

Solution

z = {-0.6666666667, 2.666666667}

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