Page 179 - aljaber

@ @¶ìÿa@óÝy‹¾a@ u@ @QVV

2≤x ≤3 ( ) 6 < 2x + 2 ≤ x + 5 (.)

2<x ≤3 ( ) x ≤3 ( ) x ()
x >2 ()
x
()

10 < 2x + 3 < 17 5 <x +2 <7

5() 4( ) 3( ) 2 ()
27 ( )
31 ( ) 115.2 < n3 < 225 n ()
15 13 ( )
14 ( )
17 ( )

3p + 8 ≤ 116 p ()

29 ( ) 23 ( ) 17 ( )

4.5 ≤ y ≤ 6.5 2.5 ≤ x ≤ 7.5 ()

x − 2y

11.5 ( ) 10.5 ( ) −6 ( ) −10.5 ( )

yx x + y = 35 ()

35 ( ) x x <y 5 20 ( )
()
30 ( ) 25 ( )

−6 ≤ y ≤ 4 −4 ≤ x ≤ 1

36 ( ) 30 ( ) 24 ( ) x2 − y2

16 ( )

. ABC ()