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Mathematics 13 Online
OpenStudy (anonymous):

Please help!! fan and medal..

OpenStudy (anonymous):

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OpenStudy (anonymous):

you dont need to give me the answer i want to know how to do it... becuase i dont get the 3 thingy..

OpenStudy (anonymous):

It is a cube root of -729. That means, you have to find a number which, when multiplied with itself three times, give you -729.

OpenStudy (anonymous):

its the same when it comes to negatives?

OpenStudy (anonymous):

i dont get what you mean... sorry..

OpenStudy (anonymous):

if the half of umm a729 is.. 364 rigt?

OpenStudy (anonymous):

Suppose you have the number 3. If you times 3 with itself three times, you get 3 * 3 * 3 = 27 Then you can say that 27 is the cube of 3 or 3 is the cube root of 27

OpenStudy (anonymous):

similarly you have to find a number 'a' such that 'a' is a cube root of -729, or, a * a * a = 729

OpenStudy (anonymous):

okay so... -729 it would be..uhh

OpenStudy (anonymous):

working on it hang on

OpenStudy (anonymous):

I get what you say...im just blank where do i start? Do i first divide the -729?

OpenStudy (anonymous):

or do i find the cube root first?

OpenStudy (anonymous):

first factor 729

OpenStudy (anonymous):

okay so half is 364.. right?

OpenStudy (anonymous):

|dw:1400795056962:dw|torization like this

OpenStudy (anonymous):

ohh so keep going like simplifying it?

OpenStudy (anonymous):

|dw:1400795205987:dw|

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