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Mathematics 20 Online
OpenStudy (anonymous):

y^2-20y+100=1

sam (.sam.):

(y-9)(y-11)

OpenStudy (agreene):

y^2-20y+100 factors to (y-10)^2 so: (y-10)^2=1 sqrt both sides and reduce, you should find: y= 9; 11

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