1、(4) (1)343 (1)1964 3 1 1 1 ()()0 27(3)3(2 9 9 8 1 1 8 ( )( ) 12(12)7(19) 5 3 7 7 1 (20) (5)252 (1)1092 8 6 (-3)(-3) 4(-17) -6(-22) 1 1 ()() -11-2(-206) (-4)344 3 4 208(-7)(-8) 4.4(-0.6)(-0.3)9.7 2 1 1 2 8 7 ()() 9.8()(6.9) 5 3 5 7 5 5 (9b1) x7(13c) 14x8(7b6t) (4xb)7(8b2c) 1 (206x)t 2(8a6mn8) 7 (ab)(
2、mn) 3(6ax)6(n2p) 5 3 9n(4n5) 6n(2n4s)(6s2n) 6(3t2)5t 2(4x5)(5x10) 4(ab5a)(4a2b) 7(abc7a)2(9a9abc) 7(xy6z)(xy4z) 8(pqpr)(6pqpr) 7 x 1 x 0.8x0.37.41.3x 9 2 3 4 1 8x5x 6(x5)8(x7)19 5 5 1 4 (8x1)x8 6x8(3x)3 8 5 y2 y2 3 0.5x6(x9)10 2 6 1 2 (32x)(5x3) 3(5x2)2 4 9 1 5 ()()(3) 28(2)3(2) 1 1 10 ( )( ) 12(14)
3、10(19) 6 2 9 (0.6)(1000) (5)342 (1)1733 9 ()()0 23(1)2(3 3 2 5 1 4 1 ( ) 5(20)8(10) 2 5 4 1 4 ( )(40) (1)432 (1)2266 7 5 (-5)(-6) 5(-7) -1.5(-21)() -201(-2010) (0)422 7 9 -1312(-22)(-9) 1.8(-1.9)(-4.4)7.5 2 1 1 3 7 4 ()() 9.8()(7.8) 7 9 4 7 5 5 (8b7) x2(72a) 7a2(8b3z) (7ab)8(7b7a) 5 (108x)z 3(5a2mn8) 4 (yz)(st) 4(7ax)3(m6q) 7 4 8n(5n1) 8n(4n6d)(8d4n) 7(5s5)5s 8(4n10)(9n2) 8(ab3a)(4a6b) 13(abc9a)2(2a4abc) 4(xy6z)(xy8z) 4(pqpr)(7pqpr) x 0.2x0.40.12.8x 3 2 3 2 1 3x6x 5(x3)8(x5)13 5 7 1 1 (3x3)x9 5x5(1x)4 9 5 y1 y1 2 4.5x6.5(x5)15 2 5 (42x)(3x2) 3(8x7)4 7 5