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Mathematics 20 Online
OpenStudy (anonymous):

how do i remove the radical from the numerator of a fraction?

OpenStudy (anonymous):

example ?

OpenStudy (amistre64):

find a good eraser :)

OpenStudy (anonymous):

hur hur very funny

OpenStudy (kira_yamato):

square the whole fraction if it's an equation

OpenStudy (anonymous):

its radical 21 over 7

OpenStudy (amistre64):

radicals are removed by multiplying them by a like radical that has the complement exponent inside

OpenStudy (amistre64):

times it all by sqrt(21)/sqrt(21)

OpenStudy (anonymous):

o ok i thot so k thx

OpenStudy (anonymous):

you'll get a radical in the denominator instead

OpenStudy (anonymous):

ya its better than having it in the numerator cus its impropper

OpenStudy (anonymous):

if its in the denominator it works

OpenStudy (anonymous):

usually you are asked to do the opposite (rationalizing a fraction)

OpenStudy (amistre64):

i tend to put my radicals whereever they look prettiest

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