•
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27
89:
 ;
97 8:=
3  2
3
3
2
 3
= + 2  ÷2
=
A
 A
7  ; ÷ 3 ÷−  2 ÷ >< )?
=  =
 <
7
* ! 6 6 >3 )?
:7 8 :=
<
37 8 9:
2
2
< −3
;
=
2
3
3
2 =
×
< 2@
2
3
3
227 8:<
3
 = 3
= ×2  − 3
A
 < =
3
<
3 −2
=
B
3
=
3
>= )?
2=7 8 :B
>< )?
2  3 22 
+ ÷ ÷
A  = 23 
>= )?
2;7 8:B
B7 8:2
2
2
3 −2
=
3
<
2
B
>; )?
A7 8:3
3
<
+=
A
A
;
;−3
<
>= )?
237 $-:<
>= )?
<7 8 :2
<
2
 2
3 −2  ÷2
B
=
 =
>3 )?
>; )?
;
2 =
+
= A
2
=
3 ×2
=
A
>= )?
2@7 8 :<
;7 8:@
2
<
−2
=
B
=
3
2 ×2
A
=
;
3
−;
B
=
3
=
=
>; )?
=7 8 :@
2
2
= ×2
=
<
2
2
= −2
=
<
>; )?
<
>3 )?
2<7 8 :A
3
3
 2
2 + 3 ÷÷ 3
=
=
 A
>; )?
3
>= )?