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2014-10-28T20:29:12+01:00
A= √5 + √5 = 2V5

B=
 = V100x5 /5 =V10²x5 /5 = 10V5/5= 2V5

C= 2√5
√5 = 2V5² =2x5 =10

D=
√20 = V4x5= V2²x5 = 2V5

E=
  =  V10