Răspuns :
√(16*8) = √128 = 8√2 Am inmultit nr sub radical, dupa care am descompu nr 128 cu "bara"; ce a ramas fara pereche ramane sub radical.
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[tex] \sqrt{16 \times 8} = \sqrt{ {8}^{2} \times 2 } = \sqrt{8 ^{2} } \sqrt{2} = 8 \sqrt{2} [/tex]
√(16*8) = √128 = 8√2 Am inmultit nr sub radical, dupa care am descompu nr 128 cu "bara"; ce a ramas fara pereche ramane sub radical.