1、8 8 x2x9x10 6.5y9y3y18y6.5y9.5y184.5 2x4x35y45y9 2x(9x5)4x3(x1)3 5 3 bbb27 4x4(x1)24(x7)2 4 4 3(x8)5x 3x4(4x5)44(x8)72(x6)32(92.5x) 2(x2)9x 1 1 4(x5)3x9(x2) y46y5 6 2 x3 3x 61 3x5.5x16 6 5 x4 2x1 5x3 4(x3)3x 3 3 9 6xx16 3x9x6 4 6x11.5x3x15.5x5272 7x x 1 4x9.5x82.534 2 4x3412x 2x5.5x19 5 x4x4 x37x41
2、3 x9x 8x0.5x3x14x2x8x10 2.5y7.5y9y1110y6.5y5.5y188.5 5x8x83y52y9 7x(5x5)7x5(x9)7 3 7 bbb45 3x2(x6)43(x9)2 8 8 3(x8)5x 2x3(6x4)63(x7)84(x10)92(75x) 5(x4)6x2(x6)4x6(x9) y64y4 4 6 x1 2x 65 x6.5x12 5 4 x3 4x4 2x3 4(x3)3x 2 3 xx16 x3x9x14.5x5x7.5x20677 9x x 13 x9.5x4512x4313x 9x0.5x10x3x6 3x26x63 9 x8x 6
3、x6x9x152 2 20x4x5x14 y2y6y17y4y7.5y146 5x7x7y64y7 3x(7x10)4x2(x8)bbb44 9x5(x3)92(x8)2 8 4 4(x7)5x 3x2(5x1)53(x6)44(x2)66(12.5x) 2(x4)7x5(x2)3x1(x6) y53y8x2 3x 24 x6.5x8 x3 3x1 6x6 3(x9)3x 4 2 xx18 4x4x44x11.5x7x13.5x5841 13 9x9.5x9218 2 x31019x 8x9.5x19x3x1 2x87x73 1 x3x x7.5x3x11x8x3x19 5y8y7y11y10
4、y5.5y127 x9x2y86y7 9x(2x3)7x4(x9)9 9 3 43 7x3(x1)63(x2)8 8 4 3(x8)7x 5x2(6x6)13(x7)23(x2)92(59.5x) 5(x3)8x3(x1)3x7(x5) y73y7 5 6 x2 1x 61 x2.5x19 x3 4x1 7x4 3(x8)2x 4 4 4xx48 3x9x24x7.5x2x6.5x10891 x9.5x50.526x7714x x9.5x11x7x4 x48x97 5 x7x 9x7.5x6x104 4 x8x8x10 8y10y4.5y6y6y8y59 x7x2y56y2 2x(9x6)5x
5、2(x4)5 5 7 bbb28 8x3(x9)42(x1)8 4 2 4(x7)2x 5x3(5x7)32(x4)73(x6)66(56.5x) 4(x9)3x5(x3)2x9(x5) 6y82y7 3 5 x4 3x 23 x2.5x12 5 3 x2 4x3 6x4 5(x3)7x 4 3 1 4xx19 9x7x4x14.5x6x6.5x154715 x4.5x50.562x4818x 4x4.5x9x7x2 x26x2x6x 7x3x4x107x8x7x8 7y1.5y8y11y6.5y3y157.5 4x9x5y49y8 4x(2x6)3x5(x9)5 1 1 bbb82 7x3(x2)63(x5)2 2 4 4(x7)8x 4x2(2x7)84(x1)84(x10)52(49x) 4(x8)4x4(x5)5x9(x5) 8y87y4 6 6 x2 2x 33 x3.5x12 3 4 x2 3x3 8x3 4(x6)6xxx39 5x7x7x13.5x2x15.5x451013x x 4 3x2.5x331x31920x x7.5x18x1x6 x36x9 8
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