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Mathematics 10 Online
OpenStudy (anonymous):

r^2-8r+16...factor

OpenStudy (anonymous):

-4 -4

jimthompson5910 (jim_thompson5910):

r^2-8r+16 r^2-4r-4r+16 (r^2-4r)+(-4r+16) r(r-4)-4(r-4) (r-4)(r-4) (r-4)^2

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