(3z+7)(3z+7)=

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


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

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

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

Multiply (7 + 3z) * (7 + 3z)
(7(7 + 3z) + 3z * (7 + 3z)) = 0
((7 * 7 + 3z * 7) + 3z * (7 + 3z)) = 0
((49 + 21z) + 3z * (7 + 3z)) = 0
(49 + 21z + (7 * 3z + 3z * 3z)) = 0
(49 + 21z + (21z + 9z2)) = 0

Combine like terms: 21z + 21z = 42z
(49 + 42z + 9z2) = 0

Solving
49 + 42z + 9z2 = 0

Solving for variable 'z'.

Factor a trinomial.
(7 + 3z)(7 + 3z) = 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 '(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

Solution

z = {-2.333333333, -2.333333333}

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