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Calc. media geometrica a numerelor:
a) x= (√3+√2)(√7-√6)
y= (√3-√2)(√7+√6
b) x= ( √5-√4)(√6+√5)(√7-√3)
y= (√5+√4)(√6-√5)(√7+√3)
Coroana


Răspuns :

mg=rad dinxy
xy=(3-2)(7-6)=1 
urmatorul la fel
a) x*y=(√3+√2)(√7-√6)(√3-√2)(√7+√6)=(√3²-√2²)(√7²-√6²)=(3-2)(7-6)=1*1=1
mg=√x*y=√1=1

b) x*y=( √5-√4)(√6+√5)(√7-√3) (√5+√4)(√6-√5)(√7+√3)=
(
√5²-√4²)(√6²-√5²)(√7²-√3²)=(5-4)(6-5)(7-3)=1*1*4=4
mg=√x*y=√4=2