check question if correct. (algebra)

Mathematics
Tutor: None Selected Time limit: 1 Day

May 13th, 2015

you are good but there is something wrong  we know  (3)sqrt(-8) = -2 

(1 - 2 ) / 3(-2 + 9 ) = -1/ (7*3) = -1 / 21 

So 

Good Luck Larisa 

May 13th, 2015

so the answer is correct??


May 13th, 2015

?

May 13th, 2015

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