:
 
() -> 8 -> .. 8

8

21.26



21.26. , = ( + I)2 + : ) = 2 + 2 + 3; ) = 2 + 6 + 10; ) = 2 - 4 + 1; ) = 2 - \ + 51.


21.26:
al iii ' 1, L-1 : > -V \ L ...1 1 L - . ; 1 ; ' ! ? f > J 1 _ 1 La aJ V *\ -./ <*# < ntl -* 8.: 1 * 1 1 Ó-6'44' * L t LM LJ 1 L: ! ! - 1 ! L J i : s t : Lj 11 r : La .4& wU : ! . ! \ ! L ! ! * : i ! * I : ! ! 1 i j < ! 1 S : ; t 1 ; , !I ; S ! ! Ҳ J-U h = 2 + 6 4- 10 = ( + + 3)2 + 1 > j L *4 > ...5 3 > 1 * T \ J .... j * ? 1 1 1 > * !* L I I ft * = X2 4x4-1 = (2)2 hf-+-;- ; { ;---| {4 }"-4!' ?+ '$' ri ; ! ! : *~ "1Ҳ 1~: I.!'" ~~ - -4-4-4-4- !-- 4+ ò' : j -4 I 1 X2 14 + 51 = ( 7)2 -h 2

:

: 4.0/5 ( : 2)



:
20.18 20.19 20.20 20.21 20.22 20.23 20.24 20.25 20.26 20.27 20.28 20.29 20.30 20.31 20.32 20.33 20.34 20.35 20.36 20.37 20.38 20.39 20.40 20.41 20.42 21.1 21.2 21.3 21.4 21.5 21.6 21.7 21.8 21.9 21.10 21.11 21.12 21.13 21.14 21.15 21.16 21.17 21.18 21.19 21.20 21.21 21.22 21.23 21.24 21.25 21.2621.27 21.28 21.29 22.1 22.2 22.3 22.4 22.5 22.6 22.7 22.8 22.9 22.10 22.11 22.12 22.13 22.14 22.15 22.16 22.17 22.18 22.19 22.20 22.21 22.22 22.23 22.24 22.25 22.26 22.27 22.28 22.29 22.30 22.31 22.32 22.33 22.34 22.35 22.36 22.37 22.38 22.39 22.40 22.41 22.42 22.43 22.44 22.45 22.46 22.47


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