1、 7 2 2 1 1 4 ( )( ) 18(19)1(18) 3 7 5 8 4 ( )(60) (1)352 (1)2888 7 5 (13)(15) 19(10) 14.5(7) 1 1 () 125(25) (4)444 9 7 341(11)(1) 3.2(4.6)(2.6)1.2 2 1 1 3 6 1 ()() 1.1()(9.1) 9 9 3 7 5 5 (9m3) x4(77b) 19m3(4n9z) (7mn)9(9m7b) 1 (22x)z 6(6a3bc1) 7 (xy)(mn) 2(7ax)3(n3p) 5 9 6x(3x1) 2x(4x3c)(7cx) 7(9a4)
2、5a 8(6y1)(8y4) 3(ab9a)(4a5b) 9(abc8a)6(9a4abc) 7(xy9z)(xy5z) 6(pqpr)(7pqpr) 7 x 1 x 0.5x0.31.67.6x 3 8 6 2 1 7x1x 6(x6)6(x3)13 7 5 1 3 (3x6)x7 3x6(1x)6 9 5 y3 y3 6 1.5x7.5(x3)15 3 6 1 2 (42x)(2x5) 6(2x7)16 8 7 5 2 ()()(6) 25(1)3(5) 3 1 1 ( )( ) 30(21)9(10) 4 6 7 (0.2)(100) (2)333 (1)2570 8 ()0 24(2)
3、3(4) 5 6 9 1 5 7 ( )( ) 17(26)8(11) 2 6 6 9 9 (60) (5)243 (1)2252 8 8 (11)(8) 14(5) 9(24.5)() 80(19) (1)252 8 8 129(18)(3) 9.1(2.7)(0.3)0.1 2 1 1 3 2 4 ()() 9.8()(9.8) 3 8 2 5 5 5 (2a5) x8(88c) 7x3(3y7c) (9xy)5(5a7c) (1210x)c 4(4a6bc6) 6 (yz)(ef) 5(8by)6(m3q) 8b(7b7) 9b(2b4d)(2db) 2(6s6)8s 5(4y2)(6y
4、2) 7(ab5a)(8a8b) 7(abc4a)8(9a2abc) 6(xy4z)(xy8z) 4(pqpr)(5pqpr) x 0.3x0.45.69.6x 9 6 3 4 1 3x4x 9(x4)2(x7)20 5 8 (3x7)x8 9x4(13x)2 2 5 y2 y3 9 3.5x1.5(x5)20 2 5 (24x)(5x4) 2(7x3)10 9 9 2 6 ()()(2) 8(2)3(4) 7 1 1 ( )( ) 26(30)3(20) 8 8 9 (1) (3)222 (1)1599 5 0 24(1)3(3) 3 9 7 1 6 1 ( ) 12(13)10(10) 4
5、 7 2 7 1 (40) (4)352 (1)2319(9)(1) 2(3) 15(12)() 84(151) (4)242 7 4 1511(21)(20) 4.4(2.6)(2)9.2 2 1 1 1 8 7 ()() 4.8()(9.6) 9 4 9 5 5 5 (9a4) y6(72c) 4x8(6y3c) (7xy)8(4a9c) (202y)c 4(3a2mn3) 2 (xy)(st) 2(9by)8(n4p) 3 5 9y(9y2) 8y(8y6z)(9zy) 8(2s9)5s 6(3y1)(6y6) 6(ab5a)(3a3b) 12(abc9a)4(4a7abc) 5(xy7
6、z)(xy6z) 3(pqpr)(4pqpr) x 0.8x0.652.3x 9 2 3 9x5x 9(x9)9(x8)3 5 7 (4x8)x4 5x8(7x)6 y2 y1 4 1.5x2(x7)5 (33x)(4x2) 3(8x1)20 5 9 1 3 ()()(3) 11(4)23 1 4 ( )( ) 4(16)9(16) 4 6 3 (0.7)(1000) (5)313 (1)15580 8(4)2(2) 6 2 7 1 8 1 ( ) 6(22)8(17) 2 7 8 6 9 (70) (5)312 (1)2305 7 8 (12)(10) 7(6) 8(18)()() 153(142) (4)434 3 9 516(10)(7) 6.3(7)(3)3.4 2 1 1 1 1 8 ()() 9.8()(6.3) 3 4 2 5 5 5 (4b3) y7(63a) 17x4(6b2z) (6xb)3(9b2a) (202y)z 5(9a7bc8) 9 (xy)(ef) 3(8ay)7(n6p) 6 9 8y(5y9) 5y(5y2c)(7c4
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