(4z+2)(7+z)=0

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Solution for (4z+2)(7+z)=0 equation:


Simplifying
(4z + 2)(7 + z) = 0

Reorder the terms:
(2 + 4z)(7 + z) = 0

Multiply (2 + 4z) * (7 + z)
(2(7 + z) + 4z * (7 + z)) = 0
((7 * 2 + z * 2) + 4z * (7 + z)) = 0
((14 + 2z) + 4z * (7 + z)) = 0
(14 + 2z + (7 * 4z + z * 4z)) = 0
(14 + 2z + (28z + 4z2)) = 0

Combine like terms: 2z + 28z = 30z
(14 + 30z + 4z2) = 0

Solving
14 + 30z + 4z2 = 0

Solving for variable 'z'.

Factor out the Greatest Common Factor (GCF), '2'.
2(7 + 15z + 2z2) = 0

Factor a trinomial.
2((7 + z)(1 + 2z)) = 0

Ignore the factor 2.

Subproblem 1

Set the factor '(7 + z)' equal to zero and attempt to solve: Simplifying 7 + z = 0 Solving 7 + z = 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 + z = 0 + -7 Combine like terms: 7 + -7 = 0 0 + z = 0 + -7 z = 0 + -7 Combine like terms: 0 + -7 = -7 z = -7 Simplifying z = -7

Subproblem 2

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

Solution

z = {-7, -0.5}

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