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Mathematics 16 Online
OpenStudy (haltiamali):

x^3+27=0? help please! :D

OpenStudy (anonymous):

-3

OpenStudy (haltiamali):

how did you get that? haha

OpenStudy (anonymous):

subtract 27 to the other side and think of a number when cubed that equals 27!

OpenStudy (anonymous):

or -27 should i say

OpenStudy (haltiamali):

oooh! so since 3*3*3=27, its 3?

OpenStudy (anonymous):

-3 ^3 is -27 and -27 + 27 =0

OpenStudy (anonymous):

no its -3

OpenStudy (haltiamali):

okay thanks!

OpenStudy (anonymous):

no problem! just isolate variables to solve.

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