Asked by Lily

Find a value(s) that makes the expression

y^2 - 16
---------- undefined.
y^2 + 16

y=4i?

12 years ago

Answered by Steve

yes, and also -4i
y^2+16 = (y+4i)(y-4i)

12 years ago

Answered by Lily

Thank you!

12 years ago

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