Question

√98×√162
step by step please​

Answer 1

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Answer 2

Answer:

$\sqrt{98} \\ = \sqrt{2 \times 7 \times 7} \\ = 7 \sqrt{2}$

$\sqrt{162} \\ = \sqrt{2 \times 3 \times 3 \times 3 \times 3} \\ = 3 \times 3 \sqrt{2} \\ = 9 \sqrt{2}$

$98 \times 162 \\ = 7 \sqrt{2} \times 9 \sqrt{2} \\ = 9 \times 7 \times \sqrt{2} \times \sqrt{2} \\ = 63 \times 2 \\ = 126$

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