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OpenStudy (lokiando):
Easy question! Which is a sum of cubes? a) a^3 + 18 b) a^6 + 9 c) a^9 + 16 d) a^12 + 8
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OpenStudy (anonymous):
do you know what a sum of cubes is?
OpenStudy (lokiando):
no
OpenStudy (anonymous):
-_- okay so google sum of cubes and find out
OpenStudy (lokiando):
OpenStudy (anonymous):
well done so basically apply that rule to all the answer choices and it should only work with one of them
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OpenStudy (lokiando):
i will try
OpenStudy (lokiando):
d) a^12+8
OpenStudy (anonymous):
that's what i was thinking ;)
OpenStudy (anonymous):
not 100% sure though
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