1、2 2 5x3x2x9 y9y9y6y3y6.5y77 x8x4y67y3 2x(2x7)4x2(x3)3 3 1 bbb27 6x5(x1)93(x9)2 4 8 5(x5)2x 2x3(6x6)83(x4)82(x1)94(34x) 2(x2)7x 1 1 5(x6)6x9(x4) 6y98y5 3 3 x3 4x 41 9x5.5x13 2 5 x3 4x2 5x3 5(x8)8x 3 5 6a(47a)-3 8b(6b2)266x4(5x8)18 9y2(1y8)42(x2)7(x4) 8x3(x9)9x1 3x8 6x8.5x19 2 6 2x4 9x9 5x2(x3) 3 12 3
2、y3 5y6 4 2(14.5y)(1.5y3) 2 8 5y7 3y9 6y6 3 2(x4)7(x4) 4 8 10 9x1 8x6 5x8.5x126x5 2x9 8x3(x4) 7 xx18 x8x2x9.5x5x15.5x15687x x 10 x7.5x9422 8 5x61314x 4x2.5x12 5 x2x8 x28x21 7 x8x 4x8x4x104 8 6x8x8x4 4y1.5y5.5y177y9y3.5y44.5 4x8x7y45y4 5x(7x3)5x3(x3)9 7 1 bbb88 2x2(x6)72(x5)8 4 4 4(x5)5x 5x4(2x1)84(x7
3、)34(x9)58(45x) 3(x6)3x9(x3)3x6(x6) 9y73y9x2 3x 64 x3.5x19 6 2 x2 3x3 2x4 4(x6)5x 6 4 2a(39a)4 6b(6b6)86x2(4x5)2 9y2(3y8)82(x2)6(x1) 2x2(x2)2x1 4x9 x1.5x57x7 9x2 9x8(x4) 6 12 9y3 7y6 4 3(32.5y)(3.5y8) 4 6 3y4 3y1 6y9 1 2(x1)8(x5) 2 6 10 9x3 5x2 x9.5x18 2 7 5x7 5x9 9x8(x8)xx57 x8x6x18.5x8x6.5x30433 5x
4、 x 2 8x5.5x3583x81719x 3x3.5x18 9 x4x3 2x39x33 9 x1x x9.5x9x1718x3x3x12 7.5y4.5y10y5y7y9y168.5 x7x84y33y7 3x(3x6)7x2(x9)3 1 3 bbb26 6x3(x1)94(x9)2 8 8 2(x9)5x 5x4(3x5)83(x6)52(x5)82(37x) 2(x2)7x6(x1)6x6(x5) y27y2x2 3x 64 x8.5x2 x4 4x4 2x3 3(x4)9x3a(57a)0 8b(4b6)202x4(4x3)7 6y3(6y3)93(x3)7(x6) 7x6(x6
5、)4x3 5x2 7x1.5x93x6 7x2 8x2(x9) 6 9 8y2 8y6 4 6(71.5y)(3.5y9)9y1 2y7 9y1 4 3(x5)5(x5) 2 8 10 6x6 9x9 x5.5x26x7 6x3 2x4(x2)6xx57 7x4x9x13.5x5x4.5x10635 3x x 9 x3.5x42.584 4 4x9812x 2x1.5x10x8x4 2x39x69 5 x7x x2x8x11x4x8x16 5.5y3y6.5y204.5y3.5y2.5y138.5 9x9x2y32y4 3x(5x9)4x2(x4)3 9 7 43 2x5(x4)82(x3)4 8 4 2(x4)3x 6x4(6x9)43(x7)53(x10)32(97.5x) 2(x3)7x5(x3)3x6(x6) y79y7x1 4x 16 5x5.5x10 x2 4x4 5x4 5(x6)7x2a(68a)-4 9b(4b3)237x3(2x2)12 2y3(3y9)44(x3)5(x3) 5x5(x5)8x5 5x2 x7.5x6 4 8 3x1 3x7 4x8(x4)6y1 3y2 1 3(83.5y)(4y7)3y8 6y1 7y6 1 3(x3)7(x6) 2 8 12 6x3 2x5 9x8.5x154x5 6x9 8x7(x3)
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