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Mathematics 8 Online
OpenStudy (anonymous):

Can anyone tell me what is wrong in this calculation ?

OpenStudy (anonymous):

OpenStudy (amistre64):

seems fine to me

OpenStudy (amistre64):

you can rework it thru trig identities, but other than that, youve got it

OpenStudy (amistre64):

what do you think would be wrong with it?

OpenStudy (mathmate):

The answer is correct, but there are many ways of expressing the same thing. What are the choices, or are there instructions to express the answer in a certain way? It could even be: (cos(6x)-9cos(2*x)+8)/192

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