4z(2z+3)=6z+9

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Solution for 4z(2z+3)=6z+9 equation:


Simplifying
4z(2z + 3) = 6z + 9

Reorder the terms:
4z(3 + 2z) = 6z + 9
(3 * 4z + 2z * 4z) = 6z + 9
(12z + 8z2) = 6z + 9

Reorder the terms:
12z + 8z2 = 9 + 6z

Solving
12z + 8z2 = 9 + 6z

Solving for variable 'z'.

Reorder the terms:
-9 + 12z + -6z + 8z2 = 9 + 6z + -9 + -6z

Combine like terms: 12z + -6z = 6z
-9 + 6z + 8z2 = 9 + 6z + -9 + -6z

Reorder the terms:
-9 + 6z + 8z2 = 9 + -9 + 6z + -6z

Combine like terms: 9 + -9 = 0
-9 + 6z + 8z2 = 0 + 6z + -6z
-9 + 6z + 8z2 = 6z + -6z

Combine like terms: 6z + -6z = 0
-9 + 6z + 8z2 = 0

Factor a trinomial.
(-3 + -2z)(3 + -4z) = 0

Subproblem 1

Set the factor '(-3 + -2z)' equal to zero and attempt to solve: Simplifying -3 + -2z = 0 Solving -3 + -2z = 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 + -2z = 0 + 3 Combine like terms: -3 + 3 = 0 0 + -2z = 0 + 3 -2z = 0 + 3 Combine like terms: 0 + 3 = 3 -2z = 3 Divide each side by '-2'. z = -1.5 Simplifying z = -1.5

Subproblem 2

Set the factor '(3 + -4z)' equal to zero and attempt to solve: Simplifying 3 + -4z = 0 Solving 3 + -4z = 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 + -4z = 0 + -3 Combine like terms: 3 + -3 = 0 0 + -4z = 0 + -3 -4z = 0 + -3 Combine like terms: 0 + -3 = -3 -4z = -3 Divide each side by '-4'. z = 0.75 Simplifying z = 0.75

Solution

z = {-1.5, 0.75}

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