1、(3) (4)422 (1)1843 2 1 1 1 ()()0 19(2)3(4 6 7 8 1 1 9 ( )( ) 18(29)4(16) 4 8 8 1 5 ( )(10) (3)313 (1)2566 2 6 (-20)(-3) 5(-15) 5(-3.5) 1 1 ()() -203(-88) (-5)233 6 9 -342(-17)(-3) 6.6(-1.6)(-0.4)5.4 2 1 1 4 9 1 ()() 2.2()(7.3) 9 3 7 5 5 5 (8y9) z9(55a) 9x5(8b3t) (8xb)5(3y5a) 1 (188z)t 7(5d5xy1) 6 (x
2、y)(st) 2(6ay)8(m9q) 2 4 6b(9b5) 6b(5b4p)(2p5b) 8(7t10)9t 8(6b6)(2b8) 3(ab2a)(4a9b) 12(abc3a)3(9a4abc) 9(xy8z)(xy7z) 2(pqpr)(3pqpr) 7 x 1 x 0.6x0.57.30.3x 6 6 3 2 1 2x3x 6(x3)8(x1)6 5 2 1 3 (2x1)x5 2x9(19x)5 9 5 y3 y1 1 1.5x4.5(x1)50 2 6 1 2 (42x)(3x1) 7(2x7)1 4 7 6 5 ()()(2) 20(2)2(3) 2 1 8 ( )( ) 2
3、6(20)4(20) 3 6 9 (0.1)(300) (1)323 (1)1570 3 ()0 21(2)2(3 5 8 8 1 1 1 ( )( ) 2(12)4(13) 5 3 4 7 1 (10) (3)353 (1)1677 8 4 (-2)(-13) 7(-18) -8(-2)()() -16-5(-710) (-4)324 4 5 -343(-24)(-14) 8.2(-1.7)(-3)3.7 2 1 1 1 2 6 ()() 3.1()(3.6) 3 9 5 7 5 5 (2m9) z3(45a) 17a9(9b4c) (3ab)8(2m4a) 4 (148z)c 6(9c3bc5) 3 (bc)(ef) 5(8ax)6(n5q) 6 2 3b(4b4) b(2b8d)(6db) 7(6m5)5m 4(2m8)(5m10) 6(ab2a)(2a7b) 13(abc9a)6(2a9abc) 6(xy7z)(xy9z) 8(pqpr)(7pqpr) x 0.8x0.62.62.9x 3 4 3 8 1 8x2x 9(x3)8(x1)14 9 4 (4x8)x8 4x3(8x)5 8 5 y2 y2 2 3x2(x7)5 (42x)(3x1) 4(9x4)9