1、(0.1)(80) (1)212 (1)2964 9 1 1 1 ()()0 22(1)2(4 7 9 5 1 1 1 ( )( ) 12(10)4(15) 2 2 6 1 6 ( )(50) (1)253 (1)1796 5 7 (-18)(-13) 8(-2) 14.5(-18) 1 1 () 20(-207) (-3)432 6 8 3317(-27)(-2) -0.6(-0.9)(-5)4.1 2 1 1 1 8 1 ()() 5.7()(3.2) 5 9 4 7 5 5 (4y9) z3(25a) 3x2(8y2z) (8xy)9(8y9a) 1 (64z)z 7(2c6bc1) 8
2、 (xy)(mn) 2(9ax)2(n9p) 3 7 8x(3x6) x(4x4s)(9s5x) 8(4n7)5n 3(2n2)(3n4) 6(ab7a)(8a7b) 20(abc7a)3(7a6abc) 3(xy9z)(xy4z) 6(pqpr)(3pqpr) 5 x 1 x 0.4x0.22.30.8x 6 8 9 8 1 7x1x 8(x2)6(x1)13 5 2 1 3 (7x3)x1 7x9(17x)7 6 5 y3 y1 1 1.5x10(x1)30 2 5 1 2 (14x)(5x2) 7(8x8)14 4 3 ()()(2) 19(1)2(4) 8 1 1 ( )( ) 26(
3、15)5(12) 9 6 3 (0.3)(80) (5)243 (1)2230 5 ()0 23(4)2(5 4 8 7 1 1 6 ( )( ) 29(11)4(18) 7 8 5 5 1 (50) (2)223 (1)1070 4 8 (-19)(-12) 14(-6) 9.5(-24)()() 34(-93) (-4)353 7 3 1611(-11)(-30) -4.9(-6.4)(-2.2)2.9 2 1 1 4 2 7 ()() 7.2()(5.2) 7 8 9 7 5 5 (2y6) y4(38a) 19m2(4y3t) (4my)3(4y2a) 7 (810y)t 2(6c7xy6) (yz)(st) 3(9ay)9(n7q) 3 8 5x(4x5) 3x(6x9z)(5z5x) 3(3b4)6b 8(2x4)(5x9) 2(ab4a)(7a2b) 20(abc3a)6(7a7abc) 7(xy5z)(xy3z) 5(pqpr)(6pqpr) 7 x 1 x 0.4x0.31.70.7x 6 4 9 2 1 4x6x 8(x6)4(x2)5 7 7 1 1 (9x8)x3 5x3(13x)4 5 5 y1 y3 9 1x6(x9)25 (53x)(5x4) 3(8x1)17 7 3