3z^2+5z=12

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Solution for 3z^2+5z=12 equation:


Simplifying
3z2 + 5z = 12

Reorder the terms:
5z + 3z2 = 12

Solving
5z + 3z2 = 12

Solving for variable 'z'.

Reorder the terms:
-12 + 5z + 3z2 = 12 + -12

Combine like terms: 12 + -12 = 0
-12 + 5z + 3z2 = 0

Factor a trinomial.
(-3 + -1z)(4 + -3z) = 0

Subproblem 1

Set the factor '(-3 + -1z)' equal to zero and attempt to solve: Simplifying -3 + -1z = 0 Solving -3 + -1z = 0 Move all terms containing z to the left, all other terms to the right. Add '3' to each side of the equation. -3 + 3 + -1z = 0 + 3 Combine like terms: -3 + 3 = 0 0 + -1z = 0 + 3 -1z = 0 + 3 Combine like terms: 0 + 3 = 3 -1z = 3 Divide each side by '-1'. z = -3 Simplifying z = -3

Subproblem 2

Set the factor '(4 + -3z)' equal to zero and attempt to solve: Simplifying 4 + -3z = 0 Solving 4 + -3z = 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 + -3z = 0 + -4 Combine like terms: 4 + -4 = 0 0 + -3z = 0 + -4 -3z = 0 + -4 Combine like terms: 0 + -4 = -4 -3z = -4 Divide each side by '-3'. z = 1.333333333 Simplifying z = 1.333333333

Solution

z = {-3, 1.333333333}

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