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Mathematics 9 Online
OpenStudy (anonymous):

more help from anyone

OpenStudy (anonymous):

OpenStudy (amistre64):

what have you considered?

OpenStudy (anonymous):

i think its b

OpenStudy (anonymous):

use this formula a^3-b^3=(a-b)(a^2+ab+b^2)

OpenStudy (amistre64):

you seem to have tried to memorize the formula, but got tripped up on the signs

OpenStudy (anonymous):

maybe thanks for the help ^.^

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