1、 3 1 ( )(20) (5)322 (1)2769 2 7 (1)(20) 13(18) 15(10.5) 1 1 ()() 21(192) (5)343 2 7 3914(3)(18) 4.6(4.7)(4.5)9 2 1 1 1 7 4 ()() 5.5()(5.4) 7 3 9 7 5 5 (8y3) z8(16a) 10a3(7y9c) (2ay)8(6y8a) 4 (26z)c 8(2a8ab5) 3 (yz)(pq) 4(7ay)6(m9p) 5 2 2b(2b3) 6b(9b2s)(7sb) 3(2t6)9t 4(8n4)(2n4) 3(ab8a)(3a2b) 13(abc6
2、a)2(4a5abc) 2(xy9z)(xy8z) 4(pqpr)(8pqpr) 5 x 1 x 0.3x0.51.99.2x 9 2 3 2 1 7x2x 5(x8)6(x1)2 5 3 1 4 (7x7)x1 7x5(8x)8 2 5 y2 y2 2 1.5x10(x5)15 2 6 0.9x0.41.69.7x 3(6x8)17 5 6 ()()(5) 24(3)3(3) 1 1 1 ( )( ) 27(23)9(10) 3 2 9 (0.5)(700) (3)212 (1)2216 2 ()()0 5(3)2(4 4 3 9 1 1 1 ( ) 4(21)9(16) 4 4 5 1 1
3、 (100) (1)352 (1)2972 3 6 (14)(8) 1(2) 14.5(10.5)()() 91(106) (5)453 9 6 2320(29)(4) 9(9.6)(1.6)9.4 2 1 1 1 8 1 ()() 1.5()(2.7) 7 2 9 7 5 5 (4x8) z6(78c) 18m4(9b3z) (4mb)5(4x7c) 1 (108z)z 8(9b8xy5) 7 (yz)(mn) 3(8ax)9(n8q) 3 4 4b(5b8) b(3b7c)(8cb) 8(9a5)8a 3(4m7)(3m3) 9(ab9a)(7a6b) 12(abc5a)5(2a8abc)
4、 6(xy4z)(xy6z) 7(pqpr)(8pqpr) x 0.8x0.80.28.4x 8 1 3x4x 3(x8)7(x9)17 7 6 1 1 (9x8)x8 3x3(19x)9 5 5 y2 y3 8 4x4(x8)20 2 5 0.4x0.14.66.8x 4(8x3)10 3 1 ()()(4) 7(4)2(4) 1 1 8 ( )( ) 19(25)7(13) 7 2 7 (0.7)(1) (4)342 (1)1969 5 0 11(2)3(3 9 7 2 1 6 1 ( )( ) 11(25)8(20) 6 7 8 4 1 ( )(90) (2)442 (1)1395 3
5、8 (15)(6) 16(1) 4.5(18)() 163(44) (5)224 7 2 3918(17)(13) 5.1(7.9)(1.3)9.4 2 1 1 3 4 1 ()() 7.9()(1.7) 9 9 4 7 5 5 (2b5) x8(18b) 3m2(6n3t) (9mn)8(2b2b) (102x)t 3(4c2ab9) 5 (xy)(pq) 5(7bx)2(n8q) 4 9 9x(4x1) 8x(2x5q)(6qx) 9(9a2)4a 8(8a1)(7a3) 7(ab6a)(3a4b) 15(abc6a)9(4a3abc) 3(xy5z)(xy7z) 4(pqpr)(6pqp
6、r) x 0.5x0.89.44x 3 8 3 9x7x 8(x9)5(x1)11 7 2 (9x8)x7 4x5(13x)7 y2 y1 4 2.5x4(x4)20 3 5 0.1x0.94.64.9x 4(3x9)17 4 3 ()()(4) 11(4)3(5) ( )( ) 26(19)2(17) 8 6 9 (0.9)(100) (2)413 (1)1046 8 0 9(3)2(5 5 8 6 1 1 8 ( )( ) 21(19)9(15) 7 4 7 5 1 (100) (4)253 (1)1448 6 2 (14)(20) 17(7) 11(24.5)()() 115(182)
7、(3)222 9 2 1312(26)(23) 8.3(9)(3.8)0.3 2 1 1 3 1 4 ()() 5.8()(9.9) 3 2 2 5 5 5 (9x2) x6(57b) 2x9(9y2z) (4xy)9(5x2b) 9 (148x)z 2(9b3ab4) 8 (xy)(st) 3(9ax)7(m8p) 2 8 5y(4y1) 5y(9y2c)(3cy) 9(9a6)2a 2(7y9)(7y1) 2(ab5a)(4a5b) 20(abc7a)7(4a4abc) 9(xy6z)(xy6z) 5(pqpr)(2pqpr) x 0.1x0.17.57.9x 4x5x 4(x6)5(x9
8、)4 3 9 1 2 (4x9)x1 9x7(3x)6 9 5 y3 y3 4 2x9(x7)45 4 6 0.3x0.68.51.8x 5(3x4)20 5 3 ()()(7) 10(2)2(1) 1 1 4 ( )( ) 30(22)5(18) 8 4 5 (0.6)(10) (5)353 (1)16770 26(2)3(4 3 4 9 1 1 7 ( )( ) 11(27)5(15) 2 2 6 1 3 (80) (5)233 (1)2905 5 4 (20)(19) 2(19) 1.5(16)() 64(108) (0)314 4 4 268(17)(3) 8.7(8)(1.2)8.8
9、 2 1 1 3 9 7 ()() 4.3()(3.5) 3 3 2 7 5 5 (4b6) x6(29a) 16m9(2y2t) (2my)4(2b8a) (166x)t 9(8c8bc3) (xy)(mn) 5(9ay)9(m5q) 9 7 6a(8a3) 7a(4a3d)(7da) 7(2n2)6n 4(9a9)(8a9) 2(ab4a)(8a9b) 12(abc4a)8(4a5abc) 6(xy2z)(xy7z) 5(pqpr)(4pqpr) x 0.5x0.12.87.5x 6 4 3 2x6x 2(x5)5(x7)7 (2x2)x2 4x7(16x)8 8 5 y2 y2 3 3.5x5(x4)35 0.2x0.43.48x 5(4x7)10
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