计算题：第一部分
(1)(-x)2·(-x)3
(3)x2m+1·x m·x
(5) 3×34×9
(-y+x)·(y-x)
(7)
(9)(-y4)3 + (y3)4
(11)a3·a4·a +(a2)4 +(-2a4)2 (13)314( -1)7
9
(15) (-8)2016×0.1252015
(17) (-3xy4)3
(19) (-x2y)4 ÷(-x2y)3
(21) (7×8)0 × 10-2
(23) [(-2)-3－8-1×(-1)-2]×(π－2)0
(6- π)0－(- )-1－3×＋|- |
5 6 2
(26) 1
(π - 2016)0(- -1)2017- | -2 | +(- 1 (2)10×102×103
(4)a·(b+1)3·a2·(b+1)
(6) (x-2y)2·(2y-x)5
(a+2b)3·(2b+a)4
(8)
(10)(xy2)2
(12)2(x3)2·x3－(3x3)3 + (5x)2·x7 (14)(- 2 2)6 ×0.254 ×( 5 )6 ×(-4)4 5
12
(16) 0.5202×2201×(-1)201
(18) (-x)2m+2 ÷(-x)2
(20) (xy)10÷(-xy)2÷(xy)3
(22) 0.5-1 + |1-2|＋(2-1)3
(24) x20÷[(-x2)3]2－x2·(-x)3÷(-x2)2
(1) 3x 2y ·(-2xy 3z)
(2) 3a 3·4b 4
(3) (4×105)×(5×106) (4) -6m 2n · (x-y)3 · mn 2 · (y-x)2 (5) 2 3
(6) 1
(-3x 2 y )?(-axy 2) ? ( ab 2xy ) (-4x)2
2x 3y 2 ?(-3xy 2)2 3 2 (7) 5x 3y ·(-3y)2 + (-6xy)2·(-xy) + xy 3· (8) 0.4x
2y ·(0.5xy)2 －(-2x)3·xy 3 (9) (-5a n-1b)(-2a)
(10) (-3ab)(-a 2c)2·6ab(c 2)3 (11) [3(x-y)2]·[-2(x-y)3]·[4(x-y)] (12) (-4x)·(2x 2+3x-1)
(13) (4ab 2-2ab) ·2ab
(14) x 2(x 2-x+1) - x(x 3-x 2+x-1) (15) (-2x 3y)·(3xy 2-3xy+1) (16) 2x(3x 2+1) (17) (2x-3)(x+4) (18) (3x+y)(x-2y) (19) (2a-3b)(a+5b) (20) (a+b)2
(21) (a+b)(a-b)
(22) (-a 2)(a+1)-(a+2)(a-1) (23) 5x 2-(x-2)(3x+1) -2(x+1)(x-5) (24) (2x-3y)(3x-4y) (25) (2a+1)(a-2) (26) (a-2)2(a+2)2 (27) 59.8 × 60.2 (28) (3a-b)(-b-3a) (29) (3a+2b)(3a-2b) (30) 1012 (31) 1992 － 200×198 (32) (-2a-3b)2
(33) (3-x)(3+x) + (x+1)2
(1) -y(2) -15xy
45x2y3 (3) x - y
x2- 2xy + y2 3a
- ab 9a2- 6ab+
b2
(7) (9)
2x + 2 y
2x2- 2y2
2a 1
a -4 a -2
(4) x2- 4
xy + 2y
(6) a2-b2 -a-b
(8) x2 4
(10)
(11) 1
x+y
(12)
(13) x +1 1
xx (14)
x-2 x - 2
2 x -1
+
x-1 1 - x x2+ 9x x2-9
x2+3x x2+ 6x +9 a
3a - 1
(15) y - z -y + z xx(16)
(17) 4 a4b29 x
15x28a4b
(19) ( a2- 2 a ) a a -2 (21)
a (a - 1 )? (a - 1 ) 2 a - 1 a (18)
(20)
a - 1 a - 1
2x x - 2 y y
2 2
-
2 2
+
2 2 x2-y2y2-x2y2-x2
(a2- 4) 2a
(a+2)2 ?(a-2)2
1-a a2-1
39
a -1 a - 1
a a
2
(22)
(1) 3 7
(3) 3 0 0
(5) 6 2 7 ( - 2 3)
(7)a4b2+ a2b4( a 0 ,b 0 ) (9) 5 94
(2) 4 9 (4) 1 4112
(6)200a5b4c3(a 0,b0,c0) (8) 48 6
(10)81125
144
(11)1 2 1 b
2
( a0 , b0 ) 16a2
(13)7
2
(15) 1 6 a 3
+ 3 2 a2, (a0 )
4 1 2- 4 0 2
9 a 3
12ab?,(a0,b0) 2 + 8 4
1 8 - 5 0 + 3 8
81a3-5a a + 3 4a3,(a 0)
a
2 3- 18)?( 12+
3 2)
(12)4a b(- ),(a 0,b 0) (14)22
77
(16) 2 4a 3b2c,(a0,b0, c 0) (18) x4+x2
21 3 28(-5 22)
(22)(3 6 + 8)
(24)(3 3 + 27)
(17) (19)
(21) (23) (25)
(26)