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Mathematics 10 Online
OpenStudy (anonymous):

HELP! PLEASE! ALREADY ANSWERED! NEED SOMEONE TO CHECK MY ANSWERS!!

jimthompson5910 (jim_thompson5910):

all 3 are correct, nice job

hartnn (hartnn):

last one is incorrect.

hartnn (hartnn):

there is a better answer.

jimthompson5910 (jim_thompson5910):

oh wait, the last one is all of the above...my bad...

hartnn (hartnn):

yes.

jimthompson5910 (jim_thompson5910):

because there are 2 squared variables (true), and it's equal to 1 (also true) another way to say it: you have a difference of squares equal to 1

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