Page 48 - aljaber
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@ @SU@ @†a‡Èÿa@ @
34 ab [AJHSME 1998] ( )
12 = ad − bc )
)
cd
)
:
2 ( ) 0 ( ) −1 ( ) −2 ( )
[AJHSME 1998] (
9.1234 ( ) 9.1234 ( ) 9.1234 ( ) 9.12344 ( )
S .5 3 [AJHSME 1998] (
)B S .B
(
15 ( ) 12 ( ) 10 ( ) 8 ()
[AJHSME 1998] (
:
. 9 10 ( )
.2 9 ()
.5 9 ()
98 , 49 , … 98
27 ( ) 22 ( ) 11 ( ) 6 ()
: .[AMC8 1999](6 ? 3) + 4 − (2 − 1) = 5 ( )
−()
63 ×( ) ÷ ()
+( )