1、三、解下列方程组。 3a2b12 2x6y7 4a9b1 x8y19 5x3y 71 m3b10 7y9x 71 -3m6b23 25 (2) 0.64 ; (3) 13 ; 196 125 (2) -6 ; (3) 0.001 ; (4) 106 64 3a2b9 9x3y16 a8b14 7x2y5 x8y 15 3m8b6 3y2x 15 -2m8b25 81 (2) 0.01 ; (3) 24 ; (4) 10-8 400 512 (3) 0.343 ; (4) 1030 9a6b13 4x2y19 3a4b20 9x7y4 8x3y 32 m7b8 4y x 32 -1m8b26 (
2、2) 0.49 ; (2) -3 ; (3) 0.216 ; 27 9a6b17 8x7y20 4a7b19 6x2y20 4x6y 107 7m9b8 7y7x 107 -9m8b9 49 (2) 0.81 ; (3) 14 ; (4) 10-4 (2) -8 ; (3) 0.512 ; 3a7b6 6x8y2 7a2b19 8x4y19 x y -2 8m5b13 5y7x -2 -5m6b12 (2) 0.25 ; (3) 25 ; 169 (4) 1021 7a5b10 6x8y2 8a3b10 9x8y12 9x6y 25 5m2b19 2y7x 25 -9m5b27 (3) 19
3、; (4) 10-10 (2) -1 ; (3) 0.125 ; 8a3b10 4x8y6 6a8b19 5x y16 x5y 40 7m8b29 4y x 40 -4m7b23 (3) 8 ; 289 (2) -2 ; (4) 1015 3a7b17 5x4y2 5a4b1 8x5y1 7x4y 20 9m5b29 5y x 20 -6m7b1 36 (3) 17 ; (4) 10-14 343 (2) -4 ; 2a4b3 3x7y19 3a4b1 7x5y9 4x5y -5 5m5b22 3y8x -5 -6m8b3 (3) 2 ; 144 (3) 0.008 ; (4) 1012 4a
4、3b15 2x5y17 5a5b15 5x6y2 x3y 47 5m2b19 5y8x 47 -9m7b21 (4) 10-18 (2) -5 ; (3) 0.729 ; 8a7b2 x4y1 3a5b3 4x7y1 x3y 169 3m3b0 9y4x 169 -3m9b7 (2) 0.04 ; (3) 30 ; 324 5a7b15 4x3y15 a2b2 9x9y11 7x2y -5 8m3b23 3y9x -5 -2m3b27 (3) 3 ; (2) -9 ; (4) 1018 3a6b17 4x8y18 8a3b5 4x4y12 7x3y 17 2m9b0 6y6x 17 -7m8b
5、22 (3) 27 ; (4) 10-16 121 (3) 0.064 ; (4) 109 4a8b19 9x7y10 7a b15 6x7y1 6x5y 69 9m9b4 6y8x 69 -8m9b9 (3) 7 ; 5a8b9 7x6y8 9a4b16 6x5y10 7x6y 97 m7b12 7y x 97 -10m3b14 (3) 21 ; 729 (4) 1024 5a b17 7x5y16 2a5b7 3x7y8 7x5y 113 7m5b24 3y7x 113 -3m5b22 (2) 0.16 ; (2) -7 ; 3a6b4 4x3y13 5a5b2 7x9y9 8x7y 165 2m9b6 y8x 165 -1m2b18 (3) 4 ; 361 3a5b20 7x4y6 4a6b5 x8y8 9x4y 4 5m3b23 y2x 4 -6m2b2 9a9b14 7x5y19 a5b14 x8y10 8x7y 165 7m5b15 4y2x 165 -8m6b25 (4) 10-6 8a6b20 x8y2 2a2b4 x9y4 7x6y 37 m5b26 7y5x 37 -10m b9
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