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Calculati media geometrica a numerelor :
a) x= (√3+√2)(√7-√6)
y= (√3-√2)(√7+√6)

dau coronita


Răspuns :

x= (√3+√2)(√7-√6)
y= (√3-√2)(√7+√6)

Mg=√(√3+√2)(√7-√6)(√3-√2)(√7+√6)=√(3-2)(7-6)=√1=1

se foloseste formula (a-b)(a+b)=a²-b²
(√3+√2)(√3-√2)=3-2=1
(√7-√6)(√7+√6)=7-6=1