Question

$\sqrt{42 \times \sqrt{28} }$
por favor me ajudar​

Answer 1

$\sqrt{42}\sqrt{28}\\\\=\sqrt{42}\cdot \:2\sqrt{7}\\\\=\sqrt{7\cdot \:6}\cdot \:2\sqrt{7}\\\\\sqrt{7\cdot \:6}=\sqrt{7}\sqrt{6}\\\\=\sqrt{7}\sqrt{6}\cdot \:2\sqrt{7}\\\\\sqrt{7}\sqrt{7}=7\\\\2\cdot \:7=14\\\\=14\sqrt{6}$

Answer 2

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