15z^2+17z-18=

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Solution for 15z^2+17z-18= equation:


Simplifying
15z2 + 17z + -18 = 0

Reorder the terms:
-18 + 17z + 15z2 = 0

Solving
-18 + 17z + 15z2 = 0

Solving for variable 'z'.

Factor a trinomial.
(-9 + -5z)(2 + -3z) = 0

Subproblem 1

Set the factor '(-9 + -5z)' equal to zero and attempt to solve: Simplifying -9 + -5z = 0 Solving -9 + -5z = 0 Move all terms containing z to the left, all other terms to the right. Add '9' to each side of the equation. -9 + 9 + -5z = 0 + 9 Combine like terms: -9 + 9 = 0 0 + -5z = 0 + 9 -5z = 0 + 9 Combine like terms: 0 + 9 = 9 -5z = 9 Divide each side by '-5'. z = -1.8 Simplifying z = -1.8

Subproblem 2

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

Solution

z = {-1.8, 0.6666666667}

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