Question

`√(200) * √(2)`

help me please
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Answer 1

Answer: 20

Work Shown:

`√(200) * √(2)\\\\√(200 * 2)\\\\√(400)\\\\√(20^2)\\\\20\\\\\text{Therefore, }√(200) * √(2)=20\\\\`

The rules I used were:

`√(A)*√(B) = √(AB)\\\\√(A^2) = A \ \ \text{ where } A \ge 0\\\\`