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OpenStudy (anonymous):
sqrt(t^4 + 4t^2 + 4) I know this equals (t^2 + 2) Seems simple enough but I can't figure out why.
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OpenStudy (mertsj):
\[t^4+4t^2+4=(t^2+2)^2\]
OpenStudy (anonymous):
how do I know (t^2 + 2) is a factor of (t^4 + 4t^2 + 4) ?
OpenStudy (anonymous):
can you show some middle steps please?
OpenStudy (mertsj):
|dw:1362782988067:dw|
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