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Mathematics 9 Online
OpenStudy (anonymous):

Simplify the following expression. √-121 √-24

zepdrix (zepdrix):

\[i \sqrt121*i \sqrt24\]This would be a good first step :) any thoughts after this?

OpenStudy (anonymous):

i=-1

OpenStudy (anonymous):

but you dont times the two you answer

zepdrix (zepdrix):

are either of your numbers a perfect square? :)

OpenStudy (anonymous):

yea -121

zepdrix (zepdrix):

well we need to take that i out first :) so its \[i \sqrt121=11i\] yes? :) the other one can be simplified as well.. think of it like this \[i \sqrt24=i \sqrt6 \sqrt4\] any perfect squares in that one?

OpenStudy (anonymous):

no because it is not the same numbers

zepdrix (zepdrix):

|dw:1348718288782:dw| make sense? :D

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