Question

if a is equal to 5 minus root 20 by divide 2

Answer 1

in appropriate question

Answer 2

Hey dear here is your answer

a=(5-root20)/2

a=(5-5root2)/2                     (root20 = 5root 2)

a=root2/2

a=1/root2                             (root2/2=1/root2)

hope it helped you 
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