1、()160 313(3)2 8 5 4 6、合并同类项。3y(4y7) y(3y6q)(7q8y) 6(2s3)5s 7(8y3)(7y6) 8(ab4a)(7a7b) 18(abc7a)5(2a7abc) 5(xy4z)(xy5z) 5(pqpr)(4pqpr) 7、解方程。7 x 1 x 0.3x0.83.84.2x 9 4 6 8 1 7x7x 2(x7)4(x7)10 3 8 1 1 (6x6)x8 7x5(9x)8 7 5 y1 y1 4 3.5x0.5(x1)25 3 5 1 2 (33x)(4x1) 8(7x8)12 2 9 3, 2.5 ,0 ,7.2 , 16.5 ,10 ,
2、8.7 3 1, 4.2 ,0 ,0.72 (1)20与5 (2)4.25与0.5 (3)|5.3|与|3.2| (4)与 (5)8与|2| (6)|53.9|与|2.2| 4 5 7 1 5 10(4)5(4) 3 18 7 5 7 (90)16(18) 8 4 6 7 1 9 ()256 55(3)2 8 4 8 3b(5b9) b(3b9s)(7s7b) 2(8a5)2a 7(5a1)(9a2) 4(ab4a)(7a7b) 16(abc8a)9(5a3abc) 6(xy8z)(xy7z) 4(pqpr)(7pqpr) x 0.8x0.89.81.6x 9 4 3 6x5x 7(x6)9(
3、x5)5 (6x2)x3 2x8(14x)1 2 5 y2 y2 7 4.5x10(x1)50 2 5 (12x)(2x3) 7(6x4)6 5, 1 ,0 ,1.6 , 4.5 ,3 ,7.9 6 7, 0.75 ,5 ,0.56 (1)15与5 (2)4.75与0.25 (3)|6.7|与|3.5| (4)与 (5)18与|3| (6)|51.6|与|9.9| 6 3 7 13 3 21(2)16(2) 7 8 6 ()6(21) 8 7 7 5 7 6 168 413(2)2 4 6 7 3a(6a2) a(9a5d)(9da) 3(8n1)3n 2(6x7)(4x8) 2(ab6a)(
4、2a6b) 3(abc6a)9(7a4abc) 2(xy8z)(xy9z) 7(pqpr)(6pqpr) x 0.5x0.91.27.1x 3 6 6 4 1 9x3x 5(x4)3(x3)19 7 3 1 4 (8x9)x2 2x2(13x)2 5 5 y2 y2 9 4x1.5(x9)45 (22x)(4x5) 9(3x3)7 5, 4 ,0 , 5.6 , 24.5 ,3 ,8.1 2, 2.75 ,6 , 0.4 9 (1)17与5 (2)5与2.25 (3)|4.4|与|3.2| (4)与 (5)20与|3| (6)|17.9|与|9.3| 2 9 1 11 8 20(14)27(1
5、4) 3 15 1 4 1 () (180)12 8 3 4 1 1 9 ()12(5)2 7 3 8 6b(6b7) 9b(6b3p)(8pb) 9(9b7)9b 1(3x1)(8x9) 2(ab4a)(6a6b) 15(abc9a)7(6a9abc) 6(xy7z)(xy7z) 5(pqpr)(2pqpr) x 0.4x0.91.37.1x 6 2 6 3x7x 8(x4)4(x2)9 7 7 1 3 (9x9)x4 9x3(15x)7 y3 y1 9 0.5x6.5(x6)50 4 6 (14x)(4x4) 3(6x5)16 2 7 5, 4.5 ,0 , 4.8 , 11.5 ,7 ,
6、6.9 4, 3.6 ,8 , 0.24 (1)11与7 (2)3.75与1 (3)|5.3|与|3.7| (4)与 (5)11与|8| (6)|33.3|与|8.9| 5 7 1 13 6 12(1)16(1) 7 1 2 (162)6(6) 8 4 3 1 9 2 120 419(2)2 5 8 3 3a(8a1) a(9a6s)(5s6a) 6(6t9)4t 1(9n1)(6n10) 5(ab3a)(8a4b) 11(abc3a)7(9a7abc) 4(xy8z)(xy3z) 7(pqpr)(9pqpr) x 0.6x0.464.9x 9 6 3 2 1 7x5x 2(x5)3(x1)1
7、1 9 6 (3x4)x4 8x9(1x)1 3 5 y2 y1 9 1x1.5(x2)50 (22x)(5x5) 6(8x4)2 9 9 2, 2 ,0 ,2.4 , 1 ,9 ,8.3 5, 4.7 ,6 , 0.56 (1)20与5 (2)3.5与1.5 (3)|9.3|与|0.6| (4)与 (5)13与|8| (6)|49.5|与|7.7| 7 11 5 18(11)9(11) (102)14 7 3 4 9 3 1 192 416(5)3 4a(2a3) 9a(4a9q)(3qa) 4(2m6)3m 4(8y4)(8y1) 7(ab5a)(4a8b) 16(abc5a)2(3a7a
8、bc) 4(xy5z)(xy6z) 2(pqpr)(7pqpr) x 0.7x0.22.22.7x 9 6 6 6x2x 5(x5)5(x9)14 7 8 (5x6)x5 9x3(20x)3 y2 y3 2 2.5x9.5(x7)50 (44x)(3x3) 4(9x7)17 3, 2 ,0 ,4 , 8 ,4 ,1.1 2, 3.25 ,10 , 0.64 (1)15与2 (2)4.75与0.5 (3)|6.2|与|1.1| (4)与 (5)7与|3| (6)|16.5|与|9.8| 7 7 5 22(9)28(9) 9 18 1 2 4 8 8 3 3 1 8 1 210 97(5)2 6
9、7 5 2n(4n1) n(3n3d)(5dn) 6(9m1)4m 2(6m3)(9m2) 9(ab2a)(7a8b) 11(abc9a)9(7a4abc) 6(xy3z)(xy7z) 7(pqpr)(3pqpr) x 0.5x0.68.26.1x 3x2x 2(x4)4(x8)15 9 8 (9x1)x3 5x7(14x)1 y1 y2 5 2x2.5(x3)15 3 6 (13x)(5x2) 8(2x1)4 4 5 4, 3 ,0 , 7.2 , 20.5 ,4 ,1.6 1, 3.35 ,9 ,0.24 (1)18与7 (2)5与1.5 (3)|4.8|与|0.5| (4)与 (5)18
10、与|5| (6)|42.3|与|0.9| 9 9 2 10(17)29 3 12 1 8 3 () (90) 6 7 4 3 3 6 80 7 4 4 5 4m(2m7) m(2m4s)(4s4m) 9(8b10)5b 6(9b5)(7b9) 2(ab8a)(5a4b) 13(abc9a)9(9a5abc) 4(xy5z)(xy9z) 5(pqpr)(4pqpr) x 0.3x0.81.13.5x 6 2 9 7x6x 8(x9)5(x4)18 3 3 (3x8)x9 9x2(12x)3 y3 y3 4 5x7(x8)40 (23x)(3x3) 5(7x7)4 5 3 1, 4 ,0 ,4 ,
11、 22 ,10 ,9.8 4, 0.8 ,8 ,0.16 (1)16与8 (2)3.5与1.5 (3)|4.2|与|0.3| (4)与 (5)13与|1| (6)|5.7|与|8.6| 6 5 5 21(1)20 4 9 4 (66)2(27) 7 8 1 336 315(1)3 8 7 6 5y(4y2) y(6y4q)(4qy) 2(3a2)7a 5(3a4)(2a6) 3(ab7a)(7a4b) 6(abc4a)4(7a9abc) 7(xy4z)(xy9z) 7(pqpr)(2pqpr) 5 x 1 x 0.4x0.92.40.1x 6 6 3 2x4x 3(x6)8(x7)9 7 9 (5x5)x8 2x8(4x)7 9 5 y3 y3 6 5x7.5(x3)20 (54x)(4x4) 7(6x9)10 2, 0.5 ,0 ,3.2 , 13 ,11 ,9.7 6, 0.9 ,10 , 0.16 (1)16与4 (2)3.25
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