1. 1.1 OPERATIONS OF ALGEBRA
1. Simplify :
(a) – (2x – 3y – 6) (b) (–7xy4
)( –2x5
y6
) (c) 86
42
y5x
y35x
−
−
(d) 3x + 2x + 4x (e) xy + 2xy + x (f) 2222
32 yyxyx +−+
2. Perform the indicated operations.
(a) ( ) ( ) ( )34xx73x2x87x5x 222
−−−+−+−−
(b) ( ) ( ) ( )35x6x4x3x57x8x 2322
+−−−−−−+
(c) ( ) ( )xyy6xy18x3xyy5xy7x 22242224
−−−++−
3. Simplify ( ) ( )nmnm 3433 +−−−
4. Simplify ( ) ( )2222
261520
5
3
baba −−+
5. Simplify ( ) ( )ghgghg 233 −+−−
Mariana10/7/2013