Question

Find the value of square root of 98 x square root of 162

Answer 1

98=7^2*2
162=3^2*3^2*2
If we multiply both of them and find out their square root, it will be
7*3*3*2
126

Answer 2

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Solution:
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$\sqrt{98} \times \sqrt{162} \\ \\ = > \sqrt{7 \times 7 \times 2} \times \sqrt{3 \times 3 \times 3 \times 3 \times 2} \\ \\ = > 7 \sqrt{2} \times 9 \sqrt{2} \\ \\ = > 63 \times 2 \\ \\ = > 126$
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