3z^2-42z+39=0

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Solution for 3z^2-42z+39=0 equation:


Simplifying
3z2 + -42z + 39 = 0

Reorder the terms:
39 + -42z + 3z2 = 0

Solving
39 + -42z + 3z2 = 0

Solving for variable 'z'.

Factor out the Greatest Common Factor (GCF), '3'.
3(13 + -14z + z2) = 0

Factor a trinomial.
3((1 + -1z)(13 + -1z)) = 0

Ignore the factor 3.

Subproblem 1

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

Subproblem 2

Set the factor '(13 + -1z)' equal to zero and attempt to solve: Simplifying 13 + -1z = 0 Solving 13 + -1z = 0 Move all terms containing z to the left, all other terms to the right. Add '-13' to each side of the equation. 13 + -13 + -1z = 0 + -13 Combine like terms: 13 + -13 = 0 0 + -1z = 0 + -13 -1z = 0 + -13 Combine like terms: 0 + -13 = -13 -1z = -13 Divide each side by '-1'. z = 13 Simplifying z = 13

Solution

z = {1, 13}

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