TH C HI N PHÉP TÍNH
Bài 1: Th c hi n phép tính:ự ệa) 2x
2
(
3x−5)
b)(
12x y3
+10x y2
)
: 2x y2
− + + d) 1 42
2
:2 4xy xy y− −x xc) 52 3
4 32 3
42 2x y x y+ 4 3x x x2
3
+10x y2
2
− + + d) 1 42
2
:2 4xy xy y− −x xc) 52 3
4 32 3
42 2x y x y+ 4 3x x x