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OpenStudy (anonymous):
Simplify: i(sqrt-98) -( sqrt98)
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OpenStudy (anonymous):
\[i\sqrt{-98}-\sqrt{98}\]?
OpenStudy (anonymous):
yes
OpenStudy (anonymous):
-2sqrt(98)
OpenStudy (anonymous):
\[\sqrt{-98}=\sqrt{98}i\] giving \[i^2\sqrt{98}-\sqrt{98}=-\sqrt{98}-\sqrt{98}=-2\sqrt{98}\]
OpenStudy (anonymous):
not done yet however!
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OpenStudy (anonymous):
11i
OpenStudy (anonymous):
\[98=2\times 49\] so \[\sqrt{98}=7\sqrt{2}\]
OpenStudy (anonymous):
therefore you "final answer is \[-14\sqrt{2}\]
OpenStudy (anonymous):
11i?
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