1、(600) (2)432 (1)1423 9 1 1 1 ()()0 26(4)3(2 4 7 4 1 1 3 ( )( ) 25(20)5(13) 7 8 2 1 1 ( )(70) (4)332 (1)1309 3 8 (-6)(-14) 15(-1) -4(-4.5) 1 1 ()() 183(-75) (-3)414 5 2 1015(-17)(-3) -7.3(-8.5)(-3.9)8.3 2 1 1 3 4 6 ()() 3.2()(7.3) 7 3 7 5 5 5 (3a2) z8(19a) 16a6(2n3c) (5an)7(5a2a) 1 (124z)c 6(9d3bc2)
2、3 (yz)(pq) 4(9bx)5(m8q) 9 2 3n(4n9) n(3n9c)(9cn) 5(8m1)8m 5(7n6)(4n5) 4(ab6a)(5a7b) 13(abc5a)2(4a9abc) 6(xy2z)(xy2z) 6(pqpr)(3pqpr) 7 x 1 x 0.8x0.12.88x 9 2 9 2 1 3x2x 8(x1)9(x5)11 5 8 1 4 (5x6)x8 5x9(7x)4 3 5 y2 y1 2 5x8.5(x1)5 3 5 1 2 (42x)(5x1) 5(4x8)6 2 9 1 6 ()()(5) 19(3)2(3) ( )( ) 22(11)4(10)
3、 9 4 3 (0.8)(800) (2)253 (1)1572 3 0 2(3)3(1 4 5 3 1 1 1 ( )( ) 12(19)8(14) 5 2 4 3 3 ( )(20) (3)413 (1)2013 2 2 (-15)(-3) 18(-3) 6(-16)()() -60(-96) (-1)412 9 5 -45(-21)(-22) -1.4(-8.3)(-3.3)3.2 2 1 1 3 2 7 ()() 3.1()(9.6) 9 3 2 5 5 5 (7y7) z9(68a) 15a2(5b6c) (8ab)2(2y4a) 8 (1410z)c 7(7b3xy8) 9 (yz)(mn) 4(6ay)6(m6q) 9 6 7n(9n2) 8n(6n4d)(7dn) 5(6b2)6b 10(9m4)(4m7) 3(ab5a)(3a9b) 19(abc2a)7(5a9abc) 6(xy8z)(xy8z) 8(pqpr)(2pqpr) 5 x 1 x 0.2x0.25.57.9x 6 8 6 8 1 7x9x 6(x1)3(x3)1 3 7 (4x7)x9 4x6(11x)4 7 5 y2 y3 9 3.5x5(x8)10 4 6 (12x)(5x2) 6(8x1)3 6 3