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Mathematics 12 Online
OpenStudy (anonymous):

please help!!! 6x-7 for 1/2n^2-1/2n and n=2 A. 15 B. -20 C. 4 D. -16

OpenStudy (anonymous):

i know u posted this earlier, without the correlation to n and x this doesn't make any sense to me i solved for expression with n = 2 and subbed into 6x- 7 - still not one of the choices.

OpenStudy (anonymous):

i know ,i thought maybe if i changed it ,it would come to me but it didnt .thanxs anyway

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