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OpenStudy (anonymous):
help asap
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OpenStudy (anonymous):
OpenStudy (earthcitizen):
18 sqrt(5)-14 sqrt(7)
OpenStudy (earthcitizen):
collect like terms of roots for all surds
OpenStudy (anonymous):
so its A?
OpenStudy (earthcitizen):
let's find out, \[(12\sqrt(5) - 7\sqrt(7))+(6\sqrt(5)-7\sqrt(7)) = (12\sqrt{5} +6\sqrt{5}) + (-7\sqrt{7} -7\sqrt{7})\]
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OpenStudy (anonymous):
OK
OpenStudy (earthcitizen):
kk
OpenStudy (anonymous):
So that's right?
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