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OpenStudy (anonymous):
What is the factored form of the expression? s4 – 16 A. (s - 2)2(s + 2)2 B. (s - 2)(s + 2) C. (s - i)(s + i)(s - 2)(s + 2) D. (s - 2i)(s + 2i)(s - 2)(s + 2)
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OpenStudy (anonymous):
it should be (s-2)(s+2)(s^2+4)
OpenStudy (anonymous):
See why I am confused?
jimthompson5910 (jim_thompson5910):
Well you can factor s^2+4 to get (s+2i)(s-2i)
jimthompson5910 (jim_thompson5910):
Usually books won't go this far, but apparently this one does.
OpenStudy (anonymous):
Ugh I really hate math sometimes
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