waheguru
  • waheguru
Quick Question: How does √20 = 2√5 Please Explain I am confused
Mathematics
schrodinger
  • schrodinger
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anonymous
  • anonymous
√20 = √5.4
anonymous
  • anonymous
√4 = 2
anonymous
  • anonymous
^ ding ding ding

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waheguru
  • waheguru
How does √20 = √5.4?
anonymous
  • anonymous
You can factor 20 out to equal 2*2*5. The square root of this is 2 times the square root of 5
waheguru
  • waheguru
Can you show me how this would work if say it was √30?
anonymous
  • anonymous
30 factors to 5*2*3 so you cannot change the square root of it.
waheguru
  • waheguru
√40 does factor to 2*2*10 can you show how it work with this
waheguru
  • waheguru
Would it be 2√10
anonymous
  • anonymous
exactly.
waheguru
  • waheguru
Thanks

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