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a fost răspuns

Calculati media geometrica a nr. a si b:
a=√12-2√27+5√3+√48+2√75
b=√(5-√3)²-√(2√3-3√2)²-√(5-3√2)²+√7²-1²

Răspuns :

a=√12-2√27+5√3+√48+2√75
a=2√3-6√3+5√3+4√3+10√3
a=(2-6+5+4+10)√3
a=15√3

b=√(5-√3)²-√(2√3-3√2)²-√(5-3√2)²+√7²-1²
b=5-√3-(3√2-2√3)-(5-3√2)+7-1
b=5-√3-(3√2-2√3)-5+3√2+7-1
b=-√3-3√2+2√3+3√2+7-1
b=√3+6

M.g =  √a*b = √15√3*√3+6 = √15*3+6 = √45+6 = √51 = 7

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