1、(0.2)(6) (4)313 (1)2524 8 1 1 1 ()()0 30(2)3(3 7 2 7 1 1 5 ( )( ) 21(29)4(16) 4 7 4 1 1 ( )(50) (4)442 (1)2538 3 8 (-18)(-8) 0(-3) -6.5(-6.5) 1 1 ()() -154(-141) (-2)412 8 7 -2310(-22)(-7) 8(-4.6)(-1.3)0.3 2 1 1 1 3 9 ()() 4.8()(1.5) 9 3 2 7 5 5 (3y9) z7(66c) 13x2(3b2c) (7xb)8(3y7c) 3 (164z)c 6(3b8x
2、y7) 4 (bc)(ef) 2(6bx)8(n3p) 5 4 2n(7n2) 6n(3n3s)(5sn) 4(5s9)5s 1(2x3)(4x9) 7(ab8a)(9a9b) 12(abc6a)6(5a2abc) 9(xy9z)(xy9z) 7(pqpr)(9pqpr) 5 x 1 x 0.8x0.45.35.4x 9 8 9 2 1 2x4x 5(x6)6(x7)8 7 9 1 4 (7x6)x5 8x5(12x)3 7 5 y3 y3 7 4.5x10(x9)5 2 5 1 2 (32x)(2x4) 8(5x5)19 4 7 4 3 ()()(5) 18(4)2(2) 7 1 4 ( )
3、( ) 8(26)3(16) 6 2 5 (0.8)(40) (1)212 (1)2475 9 0 19(2)3(4 9 4 7 1 1 1 ( )( ) 6(28)2(16) 2 2 2 ( )(80) (4)332 (1)2133 2 4 (-16)(-20) 13(-9) -9.5(-10.5)() 4-2(-146) (-3)224 4 5 -345(-15)(-28) -6.2(-9.7)(-1.3)7 2 1 1 3 2 3 ()() 2.6()(4.8) 3 2 4 7 5 5 (2n2) z3(66a) 13x6(8y5c) (9xy)2(8n6a) 1 (168z)c 3(9a3ab1) 7 (yz)(pq) 5(6ax)2(m8p) 2 3 4y(7y3) y(6y2z)(4z3y) 8(3n6)4n 6(9m9)(3m3) 3(ab2a)(9a7b) 2(abc3a)2(9a8abc) 8(xy3z)(xy3z) 3(pqpr)(7pqpr) 7 x 1 x 0.5x0.91.85.3x 9 4 9 6x1x 4(x5)7(x1)12 5 5 1 3 (4x2)x3 8x7(12x)7 8 5 y2 y3 2 4.5x10(x2)40 (34x)(3x3) 2(6x7)3 6 5