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Aratati ca numerele x si sunt patrate perfecte:
    x=[2^30^2·(2^6)^100·2+(64^4)^100÷2^899]^2   si
    y=5·(3^2002-3^2001-9^1000)



Răspuns :

x=[2^30^2·(2^6)^100·2+(64^4)^100÷2^899]^2
e patrat perfect, ce e scris ca ceva la puterea 2

y=5·(3^2002-3^2001-9^1000)

y=5×(3^2002-3^2001-3^2000)
y=5×3^2000 (9-3-1)
y=5x5×3^2000
y=(5x3^1000)²
deci e patrat perfect