Maecy1id
Maecy1id
Math
Answered
If x^2+y^2=22 and xy=9 then (x-y)^2=_____?
Sagot :
JamieAnnid
JamieAnnid
(x-y)^2 is equal to ×^2-2xy+y^2
rearrange it to
x^2+y^2-2xy
and substitute the variables with th given
22-2(9)
=4
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