Question

Aratati ca numerele x si y 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)

Answer 1

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