Ask your own question, for FREE!
Mathematics 16 Online
OpenStudy (anonymous):

im unsure of my answer

OpenStudy (anonymous):

|dw:1346945859230:dw| Is my answer undefined?

OpenStudy (anonymous):

its 1/1-x - 3/1-x^3 in case the drawing messes up

hartnn (hartnn):

nopes,defined.try again

OpenStudy (anonymous):

ok thanks

OpenStudy (anonymous):

is it 3?

hartnn (hartnn):

do u know the formula : 1-x^3=(1-x)(1+x+x^2) ??

hartnn (hartnn):

then your function would become: \(\frac{1+x+x^2-3}{1-x^3}=\frac{x^2+x-2}{(1-x)(1+x+x^2)}\) can u factorise x^2+x-2 ??

OpenStudy (anonymous):

Ooh, this is one of those tricky 'factor out the -1' things, isn't it?

OpenStudy (anonymous):

oh right, thanks. What i tried to do was \[\frac{ 1 }{ 1-x } = \frac{ 3 }{ 1-x ^{3} }\] and multiplied both sides by 1-x^3

OpenStudy (anonymous):

my bad haha

hartnn (hartnn):

yes @CliffSedge so now can u solve it @brygiger

Can't find your answer? Make a FREE account and ask your own questions, OR help others and earn volunteer hours!

Join our real-time social learning platform and learn together with your friends!
Can't find your answer? Make a FREE account and ask your own questions, OR help others and earn volunteer hours!

Join our real-time social learning platform and learn together with your friends!