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Mathematics 18 Online
OpenStudy (anonymous):

if x^2+y^2=200 and xy=40,then( x-y)^2=?

OpenStudy (chosenmatt):

hi welcome to openstudy!!!

OpenStudy (anonymous):

thanx

ganeshie8 (ganeshie8):

Hint : \[(x-y)^2 = x^2+y^2 - 2xy\]

OpenStudy (anonymous):

thank you i got it

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