1、(0.8)(6) (2)323 (1)2866 4 1 1 1 ()()0 24(4)2(1 2 4 5 1 8 7 ( )( ) 4(26)6(11) 4 7 6 1 1 ( )(100) (1)253 (1)2148 7 6 (-10)(-2) 7(-2) 7.5(-2) 1 1 ()() -133(-199) (-3)323 3 7 3413(-13)(-16) 0.6(-5.5)(-4.7)0.4 2 1 1 2 1 2 ()() 8.1()(4.9) 5 2 6 5 5 5 (3x3) x5(78b) 7x4(8b7z) (5xb)3(6x9b) 1 (184x)z 4(8c7xy6
2、) 3 (xy)(mn) 3(8bx)8(m3q) 9 3 2m(9m2) m(9m7c)(8c8m) 5(7n8)2n 6(2x7)(9x7) 3(ab7a)(8a5b) 9(abc9a)6(7a9abc) 6(xy5z)(xy9z) 7(pqpr)(7pqpr) 5 x 1 x 0.3x0.87.67.5x 9 4 6 4 1 5x8x 7(x9)9(x9)1 5 7 1 2 (9x1)x8 4x6(17x)1 3 5 y3 y1 5 2.5x7(x6)40 4 6 (22x)(5x2) 4(3x2)10 2 7 6 2 ()()(5) 16(2)3(4) ( )( ) 13(27)4(1
3、4) 9 2 3 (0.6)(90) (2)353 (1)2189 6 0 3(2)3(3 6 7 7 1 1 3 ( ) 17(14)8(14) 7 7 2 (60) (5)352 (1)1179 5 8 (-2)(-13) 16(-14) -0.5(-7)()() -82(-47) (-2)444 5 9 -3310(-25)(-4) 9.6(-9.3)(-0.1)4.9 2 1 1 2 1 1 ()() 7.3()(8.3) 5 8 9 5 5 5 (8m3) y8(92c) 3a7(3n2z) (6an)5(6m6c) 9 (184y)z 4(8a7mn5) 8 (yz)(ef) 4(7ay)3(m3q) 8 4 2x(9x8) x(3x4s)(6s6x) 9(7t5)4t 7(3x10)(9x5) 3(ab4a)(5a8b) 5(abc7a)4(4a7abc) 5(xy5z)(xy6z) 6(pqpr)(5pqpr) 7 x 1 x 0.2x0.13.72.4x 3 4 6 2 1 9x7x 5(x6)9(x2)14 9 2 1 1 (6x7)x7 2x4(19x)1 7 5 y2 y3 7 2x10(x6)35 2 6 (44x)(5x1) 9(5x3)13 4 5