10 = 52= = - 1 = ; 3 2 -- = 5+ = 12 32323- 4 + 42( ) ± 2- 42( - 2)...
10. 10 = 5
2
= =
- 1 = ;
3
2 -
-
= 5
+
= 1
2
3
3
- 4 + 4
( )
± 2
- 4
( - 2) = ( + 2)( - 4)
S u t m: OÀN TI N TRUNG - THCS Hoàng V n Th - N
( - 3)(2 + 7) = (2 - 7)( + 3)
- 1
+1
-
- 1
- 1
:
+
- 1
2010
- 4 + 4 = ( - 2) =
- 2
2
2
- 2 = 10
= 12
( ) = 10
- 2 = - 10
= - 8
( )
- 2
=
=
- 4
( - 2)( + 2)
=
1
+ 2
= -
1
( - 3)(2 + 7) = (2 - 7)( + 3)
- 2 =
+ 2 - 4 - 8