1、8 24(3)12(3) 9 18 5 7 6 () (78)4(12) 4 6 5 5 1 6 ()140 87(1)3 4 7 5 6、合并同类项。9m(8m3) m(8m4d)(9d5m) 4(7b2)5b 1(4b5)(4b8) 5(ab4a)(2a4b) 15(abc2a)5(7a5abc) 3(xy6z)(xy6z) 5(pqpr)(2pqpr) 7、解方程。7 x 1 x 0.2x0.44.29.3x 3 8 9 2 1 5x9x 7(x6)7(x7)15 5 9 1 1 (4x9)x9 8x7(19x)4 4 5 y1 y1 2 3.5x5(x4)15 3 5 1 2 (12x
2、)(3x3) 9(3x2)10 6 5 2, 1.5 ,0 ,2.4 , 5.5 ,5 ,-3.7 9 2, 3.2 ,-10 ,0.64 (1)-20与-8 (2)-4.5与-1.75 (3)|-8.6|与|-2.7| (4)与 (5)-4与|-2| (6)|-5|与|-9.7| 6 5 1 13 3 22(18)26(18) 9 12 7 7 7 () (120)8(24) 6 8 8 6 6 7 ()280 27(1)2 5 7 8 3n(6n1) n(3n3d)(7dn) 4(7s6)8s 5(3y5)(6y2) 4(ab3a)(6a4b) 9(abc7a)6(6a6abc) 9(xy
3、8z)(xy3z) 8(pqpr)(9pqpr) x 0.1x0.63.86.2x 3 6 9 9x3x 8(x5)5(x7)10 3 6 1 4 (2x4)x1 4x9(12x)6 y1 y1 5 0.5x6(x1)25 4 6 (42x)(5x2) 5(7x6)17 3 7 2 4, 2 ,0 ,7.2 , 12.5 ,20 ,5.9 8 4 7, 2.7 ,2 ,0.08 (1)-20与5 (2)-2.75与-1 (3)|-6.8|与|2| (4)与 (5)3与|-6| (6)|-14.2|与|-4.5| 3 7 5 11 1 17(10)30(10) 6 18 1 3 1 () (14
4、4)10(6) 4 4 6 5 2 5 ()72 612(1)2 6 3 4 6m(8m1) m(8m9c)(5cm) 3(3b3)4b 3(3m1)(3m4) 3(ab6a)(9a9b) 8(abc7a)7(4a2abc) 5(xy4z)(xy4z) 7(pqpr)(4pqpr) x 0.7x0.24.58.5x 3 8 6 8 1 8x5x 3(x3)6(x3)1 9 4 (6x4)x2 6x9(10x)7 3 5 y1 y3 9 1.5x0.5(x1)40 2 6 (53x)(3x1) 6(9x5)14 3 4, 0.5 ,0 ,1.6 , 10 ,12 ,5.7 1, 4.7 ,4 ,
5、 0.64 (1)-9与9 (2)-3.5与-1.5 (3)|-8.8|与|-2.3| (4)与 (5)-17与|-2| (6)|-4.1|与|-1.4| 5 7 5 5(9)12(9) 4 5 4 (114) 3 4 5 1 6 3 112 67(3)3 4 7 4 2m(2m8) m(7m2q)(4qm) 8(3t10)9t 9(6a4)(5a8) 5(ab4a)(6a9b) 3(abc8a)3(6a6abc) 6(xy9z)(xy5z) 3(pqpr)(6pqpr) x 0.3x0.50.99.3x 9 6 3 3x1x 8(x4)7(x4)15 9 8 1 3 (5x5)x6 2x7(2x)8 y2 y2 1 3.5x8.5(x7)40 (22x)(3x3) 4(7x9)1 6 3 3, 1 ,0 , 3.2 , 1 ,-11 ,-3.5 8, 4.6 ,-3 ,0.56 (1)-16与1 (2)-3与2.5 (3)|-5.4|与|1.5| (4)与 (5)18与|-2| (6)|-60|与|-1.1| 6 7 8 28(4)11(4) 3 12 1 2 6 (126)12(27) 8 3 7 1 8 7 294 219(1)3 7 7 6 7b(6b7) 7b(2b3s)(3sb) 9(3a5)7a 6(8a2)(6a8)
copyright@ 2008-2022 冰豆网网站版权所有
经营许可证编号:鄂ICP备2022015515号-1