(3+-1z)(7+-1z)=0

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Solution for (3+-1z)(7+-1z)=0 equation:


Simplifying
(3 + -1z)(7 + -1z) = 0

Multiply (3 + -1z) * (7 + -1z)
(3(7 + -1z) + -1z * (7 + -1z)) = 0
((7 * 3 + -1z * 3) + -1z * (7 + -1z)) = 0
((21 + -3z) + -1z * (7 + -1z)) = 0
(21 + -3z + (7 * -1z + -1z * -1z)) = 0
(21 + -3z + (-7z + 1z2)) = 0

Combine like terms: -3z + -7z = -10z
(21 + -10z + 1z2) = 0

Solving
21 + -10z + 1z2 = 0

Solving for variable 'z'.

Factor a trinomial.
(3 + -1z)(7 + -1z) = 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 '(7 + -1z)' equal to zero and attempt to solve: Simplifying 7 + -1z = 0 Solving 7 + -1z = 0 Move all terms containing z to the left, all other terms to the right. Add '-7' to each side of the equation. 7 + -7 + -1z = 0 + -7 Combine like terms: 7 + -7 = 0 0 + -1z = 0 + -7 -1z = 0 + -7 Combine like terms: 0 + -7 = -7 -1z = -7 Divide each side by '-1'. z = 7 Simplifying z = 7

Solution

z = {3, 7}

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