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Calculati: b) 2xy√(2√3-3)^2 +xy√(2√3-4)^2 -√12 xy
VA ROG E URGENT !! :*


Răspuns :

2xy|2√3-3|+xy|2√3-4|-2xy√3= (acum desfacem modulele cu grija la semne)
=2xy(2√3-3)-xy(2√3-4)-2xy√3=
=4xy√3-6xy-2xy√3+4xy-2xy√3= (reducem termenii asemenea)
=-2xy