Question

multiply : root 7 × root 42​

Answer 1

Answer:

17

Step-by-step explanation:

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Answer 2

Answer:

$\sqrt{7} \times \sqrt{42} \\ \sqrt{7} \times \sqrt{2 \times 2 \times 2 \times 2 \times 2 \times 2 \times 9} \\ \sqrt{7} \times \sqrt{2 {}^{2} } \times \sqrt{2 {}^{2} } \times \sqrt{2 {}^{2} } \times \sqrt{9} \\ \sqrt{7} \times 2 \times 2 \times 2 \times \sqrt{9} \\ \sqrt{7} \times 8 \times \sqrt{9} \\ \sqrt{56} \times \sqrt{9}$

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