desthermitcrab
desthermitcrab desthermitcrab
  • 02-04-2019
  • Mathematics
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Simplify radical 20.
I know the answer but just quizzing.
The first correct answer will be marked brainliest!

Respuesta :

MrSmoot MrSmoot
  • 02-04-2019

Answer:

2√5

Step-by-step explanation:

Use a factor tree to break down 20 into it's prime roots.

20 = 2 x 10

20 =  2 x 2 x 5

These are the prime factors of 20, so we can rewrite √20 as

(√2)(√2)(√5)

         (√2)(√2) = √(2x2) = √4 = 2, so we have

2√5

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