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Mathematics
Algebra
Simplifying radicals
Which of the following is equivalent to √20
4
5√2
2√5
20
3 answers
2√5
why
The square root of 20 is equal to the square root of 4 times the square root of 5, which simplifies to 2√5. In other words, √20 = √(4*5) = √4 * √5 = 2 * √5 = 2√5.
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