Page 36 - aljaber

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84 ( ) 74 ( ) 42 ( ) 7 ()

2 [AJHSME 1986] ( )
1−2 )

3

6() 2( ) −4 ( ) −3 ( )
3
8
[AJHSME 1986] (

80

8 ( ) 7 ( ) 6 ( ) 5 ()

() B [AJHSME 1986] ( )

B2
× 7B

6396

:B
8 ( ) 6 ( ) 5 ( ) 3 ()

(3 ∗ 5) ∗ 8 A∗B = A+B [AJHSME 1986] ( )
2 )

12 ( ) 10 ( ) 8( ) :
6 ()
200 ≤ a ≤ 400 [AJHSME 1986] (

:b 600 ≤ b ≤ 1200

300 ( ) a 6( ) 3 ()

30 ( )

: 0.4 + 0.02 + 0.006 [AJHSME 1987] ( )