1、4 5 y2 y3 5 3.5x9(x9)40 2 6 1 2 (14x)(2x5) 2(3x7)163 5 x 0.3x0.34.28.3x9 4 6 8x5x 8(x9)3(x4)205 5 1 3 (4x7)x8 5x2(14x)7y1 y1 4 3x6.5(x4)35 2 5 (13x)(3x4) 3(2x1)196 7 7 x 1 x 0.6x0.95.67.8x3 6 6 4x7x 5(x6)4(x9)89 5 1 4 (9x8)x9 8x9(11x)96 5 y1 y2 8 4x7(x2)20 3 5 (54x)(5x5) 6(8x5)124 7 x 0.6x0.31.36.3x
2、3 8 3 2 1 6x2x 4(x9)5(x9)85 4 (4x7)x9 7x7(2x)52 5 y2 y3 7 3x8.5(x1)50 4 5 (43x)(2x2) 3(3x2)172 7 x 0.6x0.51.35.2x3 6 9 5x3x 9(x1)4(x8)153 8 (6x6)x6 8x8(15x)3y3 y3 5 2x9(x9)30(14x)(5x2) 3(6x6)15x 0.7x0.57.40.6x8 1 4x4x 9(x4)6(x1)203 9 (2x3)x2 2x2(18x)1y1 y1 5 4.5x9.5(x8)45 3 6 (24x)(5x1) 9(8x5)205 9
3、x 0.4x0.89.85.6x9 8 3 9x3x 8(x4)7(x8)5(6x7)x1 2x3(11x)7y1 y3 7 3.5x3(x3)30 4 6 (24x)(4x4) 2(4x1)18x 0.8x0.19.90.2x9 2 6 2x5x 5(x4)6(x6)77 7 (2x2)x4 8x9(15x)1y3 y1 5 1.5x0.5(x1)50(53x)(3x2) 6(2x3)6x 0.6x0.84.69.3x6x6x 5(x4)2(x8)15(6x9)x8 7x3(3x)38 5 3 1x6(x2)10(34x)(5x3) 7(5x4)20x 0.4x0.11.55.4x3 2 6 9x8x 4(x3)9(x7)137 3 (9x2)x3 3x7(12x)82 4.5x0.5(x2)45(52x)(3x2) 4(6x8)34 3