1、(20) 3 6 5 1 9 ( )(40) (3)252 (1)2765 2 8 (5)(2) 4(5) 15(16) 1 1 () 142(39) (2)4341011(13)(26) 6.1(1.2)(2.9)0.5 2 1 1 4 1 7 ()() 9.7()(4.2) 9 2 8 5 5 5 (8b1) y9(69a) 6a9(2n2z) (6an)2(5b7a) 1 (204y)z 7(7b6mn1) 7 (ab)(pq) 5(6by)3(n6q) 3 3 6b(4b2) b(9b3z)(3zb) 2(7n7)7n 1(5x9)(6x9) 3(ab7a)(6a7b) 17(abc2
2、a)9(8a5abc) 3(xy7z)(xy8z) 3(pqpr)(8pqpr) 5 x 1 x 0.1x0.568.7x 9 8 3 4 1 9x4x 6(x6)4(x9)2 9 7 1 4 (5x7)x2 8x5(5x)9 6 5 y2 y2 2 1.5x3.5(x5)50 4 5 0.2x0.93.89.4x 8(4x9)6 5 2 ()()(5) 19(1)3(1) 1 1 1 ( )( ) 5(18)3(11) 6 4 3 (0.9)(4) (5)352 (1)1703 5 ()0 4(3)3(5 2 3 3 1 1 3 ( )( ) 3(30)8(19) 4 7 4 1 1 (80
3、) (3)422 (1)1936 2 2 (19)(20) 17(4) 2(8.5)()() 91(92) (0)343 4 4 334(22)(10) 2.4(5)(2.9)0.1 2 1 1 4 8 2 ()() 8.9()(6.2) 7 3 3 7 5 5 (3n9) z9(14c) 3x6(2n2z) (5xn)3(8n6c) (108z)z 3(3d5xy5) 6 (bc)(st) 3(9ax)3(n5q) 8 7 9y(4y8) 2y(6y2z)(4zy) 7(4n2)4n 7(6a5)(3a6) 4(ab7a)(6a2b) 9(abc4a)5(2a2abc) 4(xy7z)(xy
4、5z) 4(pqpr)(7pqpr) 7 x 1 x 0.8x0.46.48.6x 6 4 9 2 1 8x3x 4(x1)5(x2)14 7 9 1 1 (2x3)x3 5x8(17x)1 7 5 y1 y1 7 4.5x1(x7)20 3 5 0.6x0.17.14.3x 3(2x3)4 2 1 ()()(3) 11(2)2(5) 6 1 6 ( )( ) 2(14)5(16) 5 6 7 (0.8)(10) (1)233 (1)2925 9 0 2(3)3(1 5 4 6 ( )( ) 28(26)1(15) 6 4 2 (40) (1)432 (1)1020 3 4 (17)(4) 1
5、9(17) 4(4)() 55(206) (2)313719(12)(5) 3.4(5.9)(0.2)0.3 2 1 1 2 9 4 ()() 2.7()(5.1) 7 8 6 5 5 5 (7a7) x8(45a) 15a9(4y9z) (9ay)7(6a9a) (2010x)z 5(2b2mn5) 5 (yz)(ef) 4(8ax)4(n5p) 6 9 2n(6n7) n(7n6z)(7zn) 6(3t2)7t 1(5y3)(9y7) 4(ab4a)(7a2b) 19(abc2a)9(9a2abc) 7(xy4z)(xy7z) 4(pqpr)(5pqpr) x 0.8x0.98.86.9x
6、 6 6 9 7x1x 4(x2)3(x1)14 7 3 1 3 (6x8)x3 3x5(3x)7 5 5 y1 y1 2 3x6(x3)10 2 6 0.9x0.45.76.9x 5(7x5)17 ()()(7) 11(4)2(4) 1 1 6 ( )( ) 24(22)10(11) 2 2 5 (0.9)(7) (2)412 (1)2027 4 ()0 26(1)2(3 2 6 2 1 8 1 ( ) 29(17)6(10) 4 7 3 3 7 (80) (1)213 (1)2372 4 6 (18)(13) 18(1) 6(11.5)()() 193(131) (4)312 2 8 17
7、1(5)(14) 3.9(0.5)(1.3)8.9 2 1 1 4 6 2 ()() 7.2()(5.3) 3 9 3 7 5 5 (9b5) y2(68a) 12a5(7b7z) (2ab)5(2b3a) (144y)z 7(4d4ab3) 8 (bc)(mn) 5(8bx)6(n5q) 4 2 4m(2m3) 6m(2m6s)(8s6m) 9(8s6)3s 9(5b8)(7b10) 5(ab7a)(3a8b) 3(abc6a)4(6a2abc) 4(xy8z)(xy4z) 6(pqpr)(2pqpr) x 0.5x0.78.28.3x 3 2 9 8 1 6x9x 6(x2)3(x3)17
8、 9 5 (5x6)x6 5x3(16x)7 y1 y3 3 4x2(x8)45 2 5 0.5x0.639x 7(4x8)18 4 3 ()()(2) 12(2)3(1) 4 1 6 ( )( ) 28(17)10(12) 5 2 7 (0.7)(70) (5)413 (1)2181 2 0 1(3)3(3 5 4 9 1 1 8 ( ) 3(22)8(19) 4 7 7 7 1 (50) (1)413 (1)1961 8 4 (14)(16) 0(7) 2.5(1)() 25(164) (1)2543411(1)(11) 7.8(0.8)(3.2)7 2 1 1 2 4 9 ()() 7.
9、2()(7.2) 3 5 8 7 5 5 (6x8) y7(15b) 7a9(9b4c) (4ab)3(7x4b) (126y)c 3(5a6bc9) (yz)(ef) 3(7ax)4(n7p) 6 8 5y(6y6) y(5y5q)(9qy) 8(3n3)7n 1(9m9)(9m7) 8(ab9a)(8a5b) 16(abc9a)7(2a6abc) 8(xy3z)(xy7z) 5(pqpr)(7pqpr) x 0.5x0.96.54.3x 9 8 6 3x7x 5(x1)8(x2)6 (2x5)x5 5x2(5x)3 3 5 y2 y3 7 5x8(x1)50 0.6x0.34.77x 5(4x9)1