2z^2+8z-330=0

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Solution for 2z^2+8z-330=0 equation:


Simplifying
2z2 + 8z + -330 = 0

Reorder the terms:
-330 + 8z + 2z2 = 0

Solving
-330 + 8z + 2z2 = 0

Solving for variable 'z'.

Factor out the Greatest Common Factor (GCF), '2'.
2(-165 + 4z + z2) = 0

Factor a trinomial.
2((-15 + -1z)(11 + -1z)) = 0

Ignore the factor 2.

Subproblem 1

Set the factor '(-15 + -1z)' equal to zero and attempt to solve: Simplifying -15 + -1z = 0 Solving -15 + -1z = 0 Move all terms containing z to the left, all other terms to the right. Add '15' to each side of the equation. -15 + 15 + -1z = 0 + 15 Combine like terms: -15 + 15 = 0 0 + -1z = 0 + 15 -1z = 0 + 15 Combine like terms: 0 + 15 = 15 -1z = 15 Divide each side by '-1'. z = -15 Simplifying z = -15

Subproblem 2

Set the factor '(11 + -1z)' equal to zero and attempt to solve: Simplifying 11 + -1z = 0 Solving 11 + -1z = 0 Move all terms containing z to the left, all other terms to the right. Add '-11' to each side of the equation. 11 + -11 + -1z = 0 + -11 Combine like terms: 11 + -11 = 0 0 + -1z = 0 + -11 -1z = 0 + -11 Combine like terms: 0 + -11 = -11 -1z = -11 Divide each side by '-1'. z = 11 Simplifying z = 11

Solution

z = {-15, 11}

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