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

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


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

Reorder the terms:
(1 + z)(7 + 3z) = 0

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

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

Solving
7 + 10z + 3z2 = 0

Solving for variable 'z'.

Factor a trinomial.
(7 + 3z)(1 + z) = 0

Subproblem 1

Set the factor '(7 + 3z)' equal to zero and attempt to solve: Simplifying 7 + 3z = 0 Solving 7 + 3z = 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 + 3z = 0 + -7 Combine like terms: 7 + -7 = 0 0 + 3z = 0 + -7 3z = 0 + -7 Combine like terms: 0 + -7 = -7 3z = -7 Divide each side by '3'. z = -2.333333333 Simplifying z = -2.333333333

Subproblem 2

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

Solution

z = {-2.333333333, -1}

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