1、9 5 y3 y2 5 2x7.5(x3)10 2 6 1 2 (34x)(3x5) 8(9x3)106 7 5 x 1 x 0.4x0.19.27x6 6 6 2 1 3x9x 7(x7)8(x2)203 9 1 3 (9x1)x8 9x3(9x)85 5 y3 y1 7 1x7.5(x9)40 2 5 (53x)(3x3) 9(6x7)74 7 x 0.1x0.95.66.8x9 6 6 8x5x 8(x5)7(x9)187 4 1 4 (4x5)x1 9x7(19x)3y3 y1 9 3x6.5(x9)50(43x)(4x1) 3(4x6)14 9 x 0.4x0.926.7x6 2 6
2、 4 1 2x7x 6(x7)3(x9)33 5 (2x4)x1 6x3(12x)76 5 y3 y2 1 2.5x10(x4)50(54x)(4x1) 2(4x3)12x 0.2x0.97.29.8x9x3x 2(x8)5(x2)167 7 (3x5)x3 3x6(19x)5y2 y1 9 2x2.5(x2)5 4 5 (43x)(3x5) 8(8x1)105 7 x 0.7x0.69.56.7x3 8 6 7x7x 7(x8)7(x1)69 7 (9x5)x1 5x9(7x)74 5 4 2.5x9.5(x6)15(34x)(5x5) 2(4x4)3x 0.3x0.97.82.7x9 4
3、9 3x3x 7(x5)7(x3)2(8x1)x2 4x7(1x)6y2 y2 8 4x9(x7)20 3 6 (22x)(3x5) 9(5x8)129 9 x 0.2x0.80.54.8x6 2 9 8x7x 7(x8)8(x3)20(7x9)x4 5x2(15x)28 5 y2 y1 6 0.5x8.5(x5)35 4 6 (52x)(5x1) 6(5x7)1x 0.7x0.157.2x6x1x 2(x2)9(x2)4(9x1)x4 9x3(9x)72 3x1.5(x1)15 3 5 (22x)(5x4) 3(5x9)138 7 x 0.7x0.67.26.3x3 4 6 7x5x 7(x6)8(x8)17(5x3)x7 9x7(11x)57 5 y2 y1 3 5x2.5(x9)20(13x)(4x3) 3(8x8)15