1、3(x1)220 x28x169 x2445x244x x22x11 (8x7)(x4)02x(x6)7 8x(x5)0 x(x9)4x5(7x3)(x1)x(5x9) x229x x(x4)23x280 2x260 (x7)2408(x3)210 x28x168 x2276x272x 4x28x21 (3x9)(x3)08x(x2)8 x(x2)0 6x(x2)6x2(7x5)(x1)x(7x7) x283x 2x(x1)298x240 9x252 (x9)230(x1)230 x216x649 3x2185x277x 8x23x73 (2x1)(x3)0x(x2)2 x(x7)0 2x(x
2、2)5x6(9x9)(x4)x(7x2) x256x 7x(x9)106x210 5x218 (x3)2504(x6)280 x24x48 x2436x263x 4x23x96 (9x9)(x7)0x(x3)9 9x(x8)0 9x(x5)8x3(9x7)(x8)x(4x9) 5x252x x(x7)33x230 x261 (x1)2405(x4)230 x26x91 8x258x227x x23x7 (2x3)(x8)04x(x6)20 2x(x4)0 x(x1)3x3(3x1)(x4)x(3x6) x248x 2x(x8)27x290 9x284 (x9)2405(x2)250 x216x
3、649 9x265x263x x27x47 (4x8)(x4)0x(x9)16 x(x1)0 4x(x2)8x3(3x9)(x2)x(6x5) 4x233x x(x9)20x250 x210 (x5)210(x2)210 x216x649 7x2947x235x 4x28x51 (3x9)(x3)06x(x2)8 3x(x1)0 7x(x5)8x6(8x2)(x9)x(4x4) x279x 4x(x6)83x280 7x235 (x6)270(x2)260 x214x491 7x2335x265x x25x2 (6x7)(x3)0x(x6)3 2x(x1)0 5x(x6)8x9(5x4)(x1
4、)x(7x6) 9x212x 7x(x2)18x220 x232 (x3)210(x3)290 x212x369 4x2187x212x x22x25 (3x4)(x3)0x(x6)28 6x(x6)0 x(x9)8x2(8x5)(x9)x(6x6) x299x x(x6)22x210 x263 (x2)240(x8)220 x216x647 x265x233x x23x67 (5x8)(x9)0x(x7)3 x(x9)0 4x(x1)3x5(4x5)(x1)x(8x4) x227x x(x4)299x270 x258 (x9)220(x4)230 x22x17 x239x255x x25x7
5、4 (5x1)(x4)04x(x8)24 3x(x7)0 x(x3)4x1(2x3)(x2)x(8x7) 2x287x x(x1)30x210 x271 (x2)2204(x5)210 x24x46 x225x298x 5x25x47 (7x2)(x1)07x(x2)12 4x(x5)0 3x(x9)5x7(5x3)(x9)x(2x8) 9x235x x(x4)179x280 3x211 (x5)270(x6)250 x214x493 x279x289x 5x25x3 (2x7)(x5)0x(x3)5 9x(x4)0 5x(x4)7x4(4x8)(x6)x(8x3) 4x215x 5x(x9)
6、153x240 x267 (x5)220(x2)280 x28x166 6x253x297x 5x24x14 (9x6)(x1)0x(x9)26 x(x7)0 x(x1)3x7(2x4)(x4)x(2x1) x233x x(x4)69x230 x257 (x4)270(x1)280 x218x813 4x233x244x x24x15 (5x6)(x5)04x(x1)10 5x(x6)0 6x(x6)4x4(9x2)(x2)x(4x3) x236x 8x(x4)9x250 x224 (x8)250(x8)250 x22x16 7x228x267x x24x36 (2x4)(x5)02x(x8)16 7x(x8)0 x(x9)8x8(5x7)(x8)x(3x2) 4x285x 3x(x8)22x250 2x271 (x7)220(x5)280 x28x168 x249一、将下列方程化成一元二次方程的一般形式,并写出其中的二次项系数、
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