8z^2-36z+36=20

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Solution for 8z^2-36z+36=20 equation:


Simplifying
8z2 + -36z + 36 = 20

Reorder the terms:
36 + -36z + 8z2 = 20

Solving
36 + -36z + 8z2 = 20

Solving for variable 'z'.

Reorder the terms:
36 + -20 + -36z + 8z2 = 20 + -20

Combine like terms: 36 + -20 = 16
16 + -36z + 8z2 = 20 + -20

Combine like terms: 20 + -20 = 0
16 + -36z + 8z2 = 0

Factor out the Greatest Common Factor (GCF), '4'.
4(4 + -9z + 2z2) = 0

Factor a trinomial.
4((1 + -2z)(4 + -1z)) = 0

Ignore the factor 4.

Subproblem 1

Set the factor '(1 + -2z)' equal to zero and attempt to solve: Simplifying 1 + -2z = 0 Solving 1 + -2z = 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 + -2z = 0 + -1 Combine like terms: 1 + -1 = 0 0 + -2z = 0 + -1 -2z = 0 + -1 Combine like terms: 0 + -1 = -1 -2z = -1 Divide each side by '-2'. z = 0.5 Simplifying z = 0.5

Subproblem 2

Set the factor '(4 + -1z)' equal to zero and attempt to solve: Simplifying 4 + -1z = 0 Solving 4 + -1z = 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 + -1z = 0 + -4 Combine like terms: 4 + -4 = 0 0 + -1z = 0 + -4 -1z = 0 + -4 Combine like terms: 0 + -4 = -4 -1z = -4 Divide each side by '-1'. z = 4 Simplifying z = 4

Solution

z = {0.5, 4}

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