(z^2-16)(z^2-49)=0

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Solution for (z^2-16)(z^2-49)=0 equation:


Simplifying
(z2 + -16)(z2 + -49) = 0

Reorder the terms:
(-16 + z2)(z2 + -49) = 0

Reorder the terms:
(-16 + z2)(-49 + z2) = 0

Multiply (-16 + z2) * (-49 + z2)
(-16(-49 + z2) + z2(-49 + z2)) = 0
((-49 * -16 + z2 * -16) + z2(-49 + z2)) = 0
((784 + -16z2) + z2(-49 + z2)) = 0
(784 + -16z2 + (-49 * z2 + z2 * z2)) = 0
(784 + -16z2 + (-49z2 + z4)) = 0

Combine like terms: -16z2 + -49z2 = -65z2
(784 + -65z2 + z4) = 0

Solving
784 + -65z2 + z4 = 0

Solving for variable 'z'.

Factor a trinomial.
(16 + -1z2)(49 + -1z2) = 0

Factor a difference between two squares.
((4 + z)(4 + -1z))(49 + -1z2) = 0

Factor a difference between two squares.
((7 + z)(7 + -1z))(4 + z)(4 + -1z) = 0

Subproblem 1

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

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

Subproblem 3

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 4

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 = {-4, 4, -7, 7}

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