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OpenStudy (anonymous):
simplify the radical expression by rationalizing the denominator 4/square root of 21
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OpenStudy (anonymous):
4 root 21 upon 21?
OpenStudy (anonymous):
4 over the square root of 21
OpenStudy (anonymous):
um u rationalise the denominator by multipying root 21.........to both numerator nd denominator
OpenStudy (anonymous):
So would it be 4 root 21 over 21?
OpenStudy (anonymous):
yup
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OpenStudy (anonymous):
Thank you (:
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