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Mathematics
OpenStudy (anonymous):

(12 sqrt 5 - 7 sqrt 7)+( 6 sqrt 5 - sqrt 7)

OpenStudy (anonymous):

i wrote it wrong actually... the last part is ( 6 sqrt 5 - 7 sqrt 7)

OpenStudy (anonymous):

so its 18sqrt5 - 14sqrt7?

OpenStudy (sasogeek):

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