(z^2-49)(z^2-64)=0

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Solution for (z^2-49)(z^2-64)=0 equation:


Simplifying
(z2 + -49)(z2 + -64) = 0

Reorder the terms:
(-49 + z2)(z2 + -64) = 0

Reorder the terms:
(-49 + z2)(-64 + z2) = 0

Multiply (-49 + z2) * (-64 + z2)
(-49(-64 + z2) + z2(-64 + z2)) = 0
((-64 * -49 + z2 * -49) + z2(-64 + z2)) = 0
((3136 + -49z2) + z2(-64 + z2)) = 0
(3136 + -49z2 + (-64 * z2 + z2 * z2)) = 0
(3136 + -49z2 + (-64z2 + z4)) = 0

Combine like terms: -49z2 + -64z2 = -113z2
(3136 + -113z2 + z4) = 0

Solving
3136 + -113z2 + z4 = 0

Solving for variable 'z'.

Factor a trinomial.
(49 + -1z2)(64 + -1z2) = 0

Factor a difference between two squares.
((7 + z)(7 + -1z))(64 + -1z2) = 0

Factor a difference between two squares.
((8 + z)(8 + -1z))(7 + z)(7 + -1z) = 0

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 '(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

Subproblem 3

Set the factor '(8 + z)' equal to zero and attempt to solve: Simplifying 8 + z = 0 Solving 8 + z = 0 Move all terms containing z to the left, all other terms to the right. Add '-8' to each side of the equation. 8 + -8 + z = 0 + -8 Combine like terms: 8 + -8 = 0 0 + z = 0 + -8 z = 0 + -8 Combine like terms: 0 + -8 = -8 z = -8 Simplifying z = -8

Subproblem 4

Set the factor '(8 + -1z)' equal to zero and attempt to solve: Simplifying 8 + -1z = 0 Solving 8 + -1z = 0 Move all terms containing z to the left, all other terms to the right. Add '-8' to each side of the equation. 8 + -8 + -1z = 0 + -8 Combine like terms: 8 + -8 = 0 0 + -1z = 0 + -8 -1z = 0 + -8 Combine like terms: 0 + -8 = -8 -1z = -8 Divide each side by '-1'. z = 8 Simplifying z = 8

Solution

z = {-7, 7, -8, 8}

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