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Mathematics 19 Online
OpenStudy (anonymous):

Medal & fan. Find the error in this problem.

OpenStudy (anonymous):

OpenStudy (anonymous):

Just wanted to say Love your picture!

OpenStudy (anonymous):

hhhhhhhhh

OpenStudy (btaylor):

They square (-3n), not just n.

jimthompson5910 (jim_thompson5910):

This is a very common error. If you have -3n^2 and say n is n = 2, then you replace n with 2 to get -3n^2 = -3(2)^2 Notice how we're only squaring the 2 and NOT the 3 and NOT the -3

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