[SPAM]

["fgb1" <fgb1@xxxxxxxxxxxx>]

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Amigos... Tõ precisando de ajuda em 2 problemas:

1) Quantos "noves" existem na representação decimal de 99999899999^2?

a) 7
b) 9
c) 11
d) 13
e) 15

2) Quantos inteiros x e y existem tais que 15x^2 - 7y^2 = 9/

a) 0
b) 1
c) 2
d) 3
e) 4

Desde já agradeço


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