21-28 Simplify:
21) \( 2 \sqrt{125 v} \)
Answer
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Answer
\( 2\cdot5\sqrt{5v} = 10\sqrt{5v} \)
Steps
Step 1 ：\( 2\sqrt{125v} = 2\sqrt{5^3v} \)
Step 2 ：\( 2\sqrt{5^3v} = 2\cdot5\sqrt{5v} \)
Step 3 ：\( 2\cdot5\sqrt{5v} = 10\sqrt{5v} \)
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