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anonymous
 4 years ago
please REALLY help question is on attachment!!!!
anonymous
 4 years ago
please REALLY help question is on attachment!!!!

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anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0RATINONLIZE THE DENOMINTOR

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0if we simplify the bottom we get \[\sqrt{7}2\]

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0did you already combine like terms in the denominator?

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0we have to multiply by its conjugate \[\sqrt{7}+2\] to get rid of the radical on the bottom, to make the equation stay equal we multiply by the conjugate/conjugate which equals 1, anything times 1 is itsself so it doesnt change the equation

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0the top (5) times the conjugate is \[5\sqrt{7} + 10\]

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0on the bottom it is \[3\]

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0so we have dw:1327711885632:dw
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