Question

multiple by 7√7by 8√7​

Answer 1

Answer:

7√7×8√7

56×7

392

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Answer 2

$\huge\bold\orange{Solution}$

$3 \sqrt{28 } \times 2\sqrt{7}$

It's can be also written as

$3 \times 2 \times \sqrt{28} \times \sqrt{7} \\ \\ so \: we \: get \: \\ = 6 \times \sqrt{28 \times 7} \\ \\ by \: multiplication \: \\ = 6 \times \sqrt{2 \times 2 \times 7 \times 7 } \\ = (6 \times 2 \times 7) \\ \\ = 3 \sqrt{28} \times 2 \sqrt{7} = 84$

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