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[tex] \sqrt{5} \times 2 \sqrt{5} = [/tex]


Răspuns :

√5 x 2√5 = 2 x √5 x √5 = 2 x 5 = 10


[tex] \sqrt{5} \times 2 \sqrt{5} = 2 \sqrt{5 \times 5} = 2 \sqrt{25} = 2 \times 5 = 10 [/tex]