1、(18) 7 6 5 1 1 ( )(70) (4)253 (1)1520 2 8 (5)(4) 7(1) 7.5(17) 1 1 () 84(121) (4)342 3 9 248(25)(6) 3.2(3.2)(4.7)3.9 2 1 1 3 2 4 ()() 3.6()(5.4) 9 9 2 7 5 5 (7a3) z7(27b) 14a9(3b3c) (7ab)7(2a8b) 6 (1410z)c 9(2d6xy1) 7 (xy)(pq) 4(9ay)9(n8q) 8 6 2m(6m4) m(7m2d)(5d5m) 6(8b10)4b 6(2n2)(7n10) 2(ab2a)(2a6b
2、) 7(abc5a)9(7a7abc) 6(xy8z)(xy4z) 8(pqpr)(4pqpr) 5 x 1 x 0.2x0.16.23.5x 9 8 9 8 1 5x7x 6(x2)5(x7)20 9 6 1 1 (2x1)x3 3x5(20x)5 2 5 y2 y2 9 2x0.5(x4)30 2 5 0.4x0.97.12.1x 7(4x2)1 6 6 ()()(3) 22(3)3(4) 1 1 4 ( )( ) 27(12)1(13) 9 8 3 (0.1)(500) (5)433 (1)1603 9 ()0 12(3)2(3 4 3 9 1 1 3 ( )( ) 29(12)3(15
3、) 8 4 4 5 1 (20) (1)322 (1)2098 4 4 (14)(20) 13(7) 11(22.5)()() 73(36) (3)234 7 2 71(13)(4) 4.4(7.9)(2)3.8 2 1 1 3 4 8 ()() 9.9()(6.4) 5 3 8 7 5 5 (7x5) y5(57c) 6x7(9y3z) (3xy)2(8x5c) 4 (1010y)z 5(4d2bc1) 5 (ab)(pq) 5(8ax)2(n4q) 8 5 4n(4n7) n(2n7p)(2pn) 3(3a6)9a 7(9m6)(5m9) 3(ab2a)(8a6b) 17(abc3a)6(
4、9a3abc) 9(xy9z)(xy4z) 4(pqpr)(5pqpr) x 0.3x0.12.94.5x 3 6 6 2 1 6x9x 7(x9)3(x1)7 9 4 (4x1)x5 9x8(19x)3 y2 y3 6 4.5x0.5(x9)10 3 5 0.1x0.95.47.4x 8(6x1)6 3 3 ()()(4) 26(3)2(5) 1 1 1 ( )( ) 20(19)8(20) 9 4 7 (10) (2)413 (1)2144 2 ()0 18(2 2 6 2 1 9 1 ( )( ) 22(16)7(18) 8 8 5 (10) (5)453 (1)2186 7 8 (17
5、)(2) 7(20) 14(4.5)() 92(124) (0)453 9 3 354(24)(1) 6.3(2.7)(1.2)3.7 2 1 1 2 4 3 ()() 1.8()(4.6) 9 5 2 5 5 5 (4y1) z8(33b) 11x3(2b9z) (5xb)3(9y2b) 1 (106z)z 3(9a6ab8) (bc)(st) 3(6ay)5(n5q) 6 9 4m(9m1) m(4m2z)(3z6m) 6(4a6)4a 3(9m9)(3m1) 8(ab4a)(6a2b) 20(abc8a)3(9a5abc) 6(xy8z)(xy3z) 7(pqpr)(3pqpr) 7 x
6、 1 x 0.5x0.31.35.3x 3 4 3 4x1x 5(x9)4(x6)1 9 7 1 3 (4x8)x2 9x2(8x)4 9 5 y1 y1 4 4.5x4(x5)35 0.8x0.92.58.9x 4(4x2)15 4 3 ()()(2) 23(4)2(2) 8 1 6 ( )( ) 25(24)1(17) 7 6 7 (0.8)(80) (4)352 (1)2484 7 0 28(3)2(2 9 4 9 1 4 9 ( )( ) 6(18)6(10) 3 3 8 6 1 (70) (5)442 (1)1949 5 2 (14)(8) 14(19) 6.5(8.5)()() 4
7、3(15) (5)444 6 2 316(6)(23) 8.6(3.4)(4.1)8.7 2 1 1 4 1 2 ()() 8.7()(7.8) 5 5 7 7 5 5 (4n5) x7(64b) 2a6(2y6z) (6ay)6(6n8b) (184x)z 7(4a2ab8) 9 (bc)(pq) 3(8ax)8(n3q) 5 4 5x(3x3) x(3x3p)(5p2x) 7(4b10)4b 5(4m9)(4m1) 6(ab4a)(7a5b) 13(abc9a)5(2a3abc) 5(xy7z)(xy6z) 6(pqpr)(9pqpr) x 0.9x0.38.18x 9 2 9 8x1x
8、6(x9)8(x4)16 3 9 (5x1)x4 5x5(3x)8 5 5 7 3x9.5(x3)45 0.3x0.97.17.3x 7(4x6)19 4 6 ()()(7) 7(2)3(1) 1 1 8 ( )( ) 5(29)1(12) 7 6 9 (5) (2)432 (1)2096 4 0 13(4)2(3 8 5 5 1 5 1 ( )( ) 22(28)10(15) 8 6 6 (40) (3)333 (1)1219 7 4 (11)(19) 4(8) 6(19.5)() 11(209) (5)4432814(1)(7) 8.7(6.2)(3.1)2 2 1 1 4 9 4 ()(
9、) 3.5()(1.6) 5 4 5 5 5 5 (7x8) x9(15c) 14a6(9y2z) (5ay)3(7x2c) (142x)z 2(2c2bc2) (xy)(mn) 2(9ax)2(n3p) 7a(9a2) a(2a9d)(4d3a) 3(4a3)8a 2(5y1)(2y3) 8(ab2a)(6a2b) 7(abc3a)2(9a2abc) 3(xy2z)(xy2z) 2(pqpr)(6pqpr) x 0.8x0.75.82.4x 6 6 3 4x3x 2(x2)6(x5)17 1 4 (2x8)x2 4x4(8x)8 6 5 y1 y1 7 4x6.5(x8)40 0.5x0.28.55.7x 4(2x5)16
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