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6 rad 4 - 6 rad 9
-rad 3 - rad 9


Răspuns :

6√4−6√9=
=6*2−6*3
=12−18
=−6


−√3−√9=
=−√3−√3²
=−√3−3
6rad4=6×2=12
6rad9=6×3=18
12-18=(-6)

-rad3-3=-(rad3+3)