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daisy32 daisy32
  • 18-08-2016
  • Mathematics
Answered

What's the square root 20

Verified Answer :

cutelion918
cutelion918 cutelion918
  • 18-08-2016

by using calculator, these are the answers:

√20 = 4.47213595499958


√18 = 4.24264068711928


but without calculator,


√20 = √(4x5)

= √4 x √5

= 2 x √5

= 2√5


√18 = √(9x2)

= √9 x √2

= 3 x √2

= 3√2

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