3 years ago

Simplify the following rational expression.

Mathematics

1 answer:

Mekhanik [1.2K]3 years ago

7 0

Answer:

z=-8 and z=8

Step-by-step explanation:

A rational expression is undefined when its denominator is equal to zero, so our expression is undefined when $z^2-64=0$ . Solving for z, we get

$z^2=64\\\sqrt{z^2}=\pm\sqrt{64}\\ z=\pm8$

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