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@ @QPY@ @pý†bɾa@ @
2 31 + 2 ( ) 2 31 − 2 ( )
3 31 + 2 ( ) 4 31 − 2 ( ) )
. qp [AHSME 1970] ( )
)
: p1 x 2 + px + q = 0
q −1 ( ) )
4q + 1 ( ) q +1 ( ) 4q − 1 ( )
5 ()
.f x = x2 + x +1 [AMC12 2000] (
3 3
6
f (3z) = 7
250
5( ) −1 ( ) −1 ()
54 ( )
9 9 3
100 2
. (
.
224
50 ( ) 46 ( ) .
22 ( )
(
.
.
100 ( ) 80 ( ) 60 ( ) 40 ( )
