1、(9) (5)313 (1)1020 3 1 1 1 ()()0 17(4)3(4 8 6 5 1 4 1 ( )( ) 12(20)10(11) 3 5 5 7 6 ( )(90) (3)353 (1)1183 8 5 (-18)(-5) 10(-4) -14.5(-14) 1 1 () 134(-203) (-2)422 7 6 2217(-23)(-20) -3.9(-9.5)(-2.2)8.5 2 1 1 1 8 3 ()() 5.6()(1.3) 3 4 5 7 5 5 (3n7) x8(93b) 8a9(8b7t) (5ab)4(5n3b) 1 (86x)t 6(3a6bc8) 5
2、 (bc)(pq) 4(8ay)4(m4q) 6 7 7x(9x2) 4x(6x8d)(9dx) 8(7a7)5a 10(2x4)(2x9) 6(ab3a)(6a4b) 14(abc5a)5(9a9abc) 6(xy7z)(xy5z) 8(pqpr)(3pqpr) 7 x 1 x 0.8x0.64.74.2x 9 2 9 2 1 4x8x 5(x6)5(x9)3 7 6 1 4 (8x8)x4 9x2(18x)5 2 5 y1 y3 3 0.5x6.5(x6)25 4 5 1 2 (13x)(3x3) 7(7x9)12 3 3 1 6 ()()(6) 12(2)2(1) 1 1 4 ( )(
3、) 17(30)5(15) 6 8 3 (0.1)(600) (3)212 (1)1907 8 ()0 8(4)2(1 2 4 3 1 3 1 ( ) 9(15)4(12) 2 2 8 5 8 (60) (5)212 (1)2027 4 7 (-8)(-10) 18(-12) -1(-3.5)()() 31(-181) (-3)432 5 6 -910(-29)(-5) -8(-8.5)(-1.3)7.7 2 1 1 3 4 4 ()() 1.5()(8.5) 7 5 8 5 5 5 (5b9) y4(24b) 10a9(3y7z) (4ay)9(7b7b) 4 (1810y)z 4(3c8xy8) 3 (ab)(mn) 3(7ay)2(n2p) 9m(6m3) 2m(3m9q)(8q6m) 4(2s9)3s 9(7x8)(4x3) 7(ab5a)(8a8b) 18(abc3a)5(4a6abc) 5(xy5z)(xy4z) 3(pqpr)(2pqpr) 5 x 1 x 0.1x0.61.57.3x 6 2 3 2x9x 3(x7)6(x7)3 3 5 1 1 (2x9)x9 6x5(8x)1 y2 y3 6 4.5x2.5(x1)30 4 6 (23x)(2x5) 3(6x7)3 6 3