Resposta:

Olá...

a) √529=23==>23×23=529

b)√1764=42==>42×42=1764

c)√0,81=0,9==>0,9×0,9=0,81

d)√2,56=1,6==>1,6×1,6=2,56

e)√4/16=2/4==>√4/16=√2²/2⁴=√2/2²=2/4

Espero ter ajudado!!Bons estudos ☺ ☺