1、2 5 y1 y2 4 4.5x7.5(x2)50 2 6 1 2 (44x)(3x3) 4(8x6)195 7 5 x 1 x 0.8x0.12.62.8x3 6 9 7x5x 5(x6)2(x3)65 8 (2x1)x8 2x9(15x)14 5 y3 y1 6 1.5x1(x4)20(33x)(3x2) 9(3x5)26 7 x 0.5x0.45.35.8x3 8 6 3x4x 6(x8)6(x4)39 2 1 4 (7x6)x3 4x2(5x)6y1 y3 2 3x2.5(x4)35 3 5 (22x)(3x1) 5(6x4)142 7 x 0.2x0.32.22.4x9 2 6 6x
2、2x 5(x1)4(x1)127 3 (5x9)x2 9x6(2x)7y2 y1 5 3x9(x7)45 4 5 (13x)(3x3) 6(6x2)187 5 x 0.7x0.32.53.3x3 8 9 2x1x 2(x1)6(x7)45 2 1 3 (9x2)x4 7x6(17x)8y1 y1 2 2.5x4(x4)50(43x)(4x3) 6(6x8)168 5 x 0.1x0.776.3x3 2 9 4 1 4x2x 4(x9)9(x3)13(4x5)x9 4x8(12x)69 5 y3 y2 1 2.5x4(x4)35 3 6 (32x)(2x4) 3(2x2)203 5 x 0.8x
3、0.84.36.2x3 8 3 4x5x 5(x9)3(x6)16(4x7)x8 7x5(5x)96 5 y1 y3 2 2.5x5.5(x2)25(32x)(3x1) 5(6x8)138 9 x 0.3x0.30.50.6x6 2 9 2 1 3x7x 8(x1)8(x4)17 4 (3x9)x1 7x9(8x)25 5 y2 y2 6 4.5x8(x2)25(43x)(5x3) 5(8x1)204 7 x 0.8x0.24.59.5x3x7x 4(x7)3(x9)19(6x5)x9 6x8(8x)1y1 y2 3 2.5x9(x9)30(53x)(3x3) 9(4x4)122 3 x 0.1x0.74.85.1x3 4 3 8x9x 6(x9)5(x9)83 4 (4x1)x8 6x9(12x)5y3 y1 8 2x8(x8)15 4 6 (52x)(4x1) 4(4x9)136 3