Răspuns :

a/b=2/9

a=2k

b=9k

√a×b=18√2

√2k×9k=18√2

√2k²×3²=18√2

3k√2=18√2

3k=18

k=18:3

k=6

a=2×6

a=12

b=9×6

b=54

Mg = √a*b = 18√2 => a*b = 18²*2 = 648

a/b = 2/9 => a = 2b/9

inlocuim

2b/9*b = 648

2b²/9 = 648

2b² = 5832

b² = 2916

b = √2916

b = 54

a = 2*54/9 = 108/9

b = 12

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