Page 48 - aljaber

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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 ×( ) ÷ ()

+( )