1:A^4-7A^2+12:(X-Y)(X-2Y)-6Y^23:(X^2+3X-3)(X^2+3X+4) 4:(X^2-7X+6)(X^2-X-6)+565:X^2-2XY-3Y^2+3X-5Y+2

(1)x^2*x^8+x^13/x^3 (2)a^19/a^12/a^3 (3) (x-2y)^5/(2y-x)^3 (4)(x-y)^5/(x-y) (5)(x-y)^6/(y-x)^4 a(x+y)^2+4a-4a(x+y) 谁能帮我因式分解啊.A.4（x-y+1)+y(y-2x) B.5+7x-6x² C.12x²+xy-6y² (1)(x+y)^2-4(x+y)-12 (2)12(x+y)^2+11(x+y)(x-y)+2(x-y)^2 (3)5+7(a+1)-6(a+1)^2 (4)(a-2b)^2-8(a-2b)+12(5)x^6-19x^3y^3-216y^6(6)(x^2+x+4)^2+8x(x^2+x+4)+15x^2 (7)(x^2+x)^2-14(x^2+x)+24题目比较多,必将重谢 (1)(x+y)^2-(x+y)^3(2)(x-y)-(x-y)^3(3)(x-y)^2-(y-x)^3(4)2(x-y)-3(y-x)^2(5)4ab(a=b)^2-6a^2b(a+b)(6)(x+y)^2(x-y)+(x+y)(x-y)^2(7)2a(a-3)^2-6a^2(3-a)+8a(a-3)(8)24xy^2z^2(x+y-z)-32xyz(z-x-y)^2+8xy(z-x-y)(9)(a-b)(b-a)^n(b-a)^2n-1 [两解）（10）2^2=3,2^b 1.c/2ab+b/3a^2c-a/5c^22.2x+2+(5/x-1)3.(a+1/a^2+3a+2)+(a+3/a^2+7a+12)4.(x/a-y+y/y-x)/(xy/x-y)5.(3-m/2m-4)/(m+2-5/m-2)6.(a+1/2a-2 -3/2a^2-2 -a+3/2a+2)* 4a^-4/3 7.(a-b/a+b-a+b/a-b)/(1- a^2+b^2/a^2-2ab+b^2)8.[(1+ 4/x-2)(x-4+ 4/x)-3]/(4/x -1)9.[1/a^2 + 1/ 提取公因式法(计算题)1、2（x+y）^2-4(x+y)2、1/2(x-2y)-(2y-x)^23、(2a+b)(a-2b)-(2b-a)(2a+3b)4、-3a^2(x-2y)^3+12a(2y-x)^45、24a^2b^3c(x+y-z)-18a^3bc^2(z-y-x)-36abc(x-z+y)6、3a^n(1-a)-2(a^n-a^n+1)(n是整数)7、(a-b)^m-(b-a)^m+1(m是整 x(x^2y^2-xy)-y(x^2-x^3y)a^4-(1-a)(1+a)(1+a^2)4x^3y+4x^2y^3+xy^38(a-b)^2+12(a-b)a^2-2ab+b^2-c^2若3^x=a,3^y=b,求3^2x-y的值 (1)2（a^2-ab)-2a^2+3ab (2)5(2x-7y)-3(4x-10y) (3)(x+y)-[3x+(-x+y)] 2X方-3X-23X方-13X+4-X方+2X+3X方+（a+1)x+aX方-(a-1)x+a(x+y)方+8（x+y)-485x方-17XY-12Y方2X方-7XY+3Y方方就是平方字母大小写没有差异 第四个 X方+（a-1)x-a第五个 X方-（a+1)x+a [1]a(x-2y)-b(2y-x)+d(2x-4y) [2]x平方-2xy+y平方-2x+2y+1 【3】一（a-x)(a-y）-x(y-a)(X-a)[1]a(x-2y)-b(2y-x)+d(2x-4y) [2]x平方-2xy+y平方-2x+2y+1【3】一（a-x)(a-y）-x(y-a)(X-a) 分解因式,急求! x^2-5x+33x^2+4xy-y^2(x^2-2x)^2-7(x^2-2x)+12x^2+x-(a^2-a)a/2-32a^4(c^2+ab)^2-(a+b)^2*c^24(x-y+1)+y(y-2x)因式分解下..最好能讲下技巧思路,. 1.（x^2-3)^2+2(x^2-3)(x-3)+(x-3)^22.(x+1)(x+3)(x+5)(x+7)+153.x^2+y^2+4x+2y+34.(a^2+a+1)^2+2(a^2+a+1)(a^2+a-1)+(a^2+a-1)^25.(x^2+4)^2-16x^26.(a+b+c)^2-(a-b-c)^27.25(x-y)^2-16(x+y)^28.x^4-81x^2y^29.x^2(x-y)+y^2(y-x)10.(a-b)(x-y)+(b-a)(x+y)(乘法)11.2 六道因式分解的题.(x+y)^4+(x+y)^2-20(x^2+7x+6)(x^2+7x-8)+45(x-1)(x+2)(x-3)(x+4)+24(a+b-2ab)(a+b-2)+(1-ab)^2(a^2+a+1)(a^2-6a+1)+12a^24x^3-31x+15 几题因式分解1.9-6xy+x^2y^2 2.(a+b)^2-18(a+b)+81 3.4-12(m-n)+9(m-n)^2 4.x^3-15.1-1/8a^3 6.-a-8a^47.x^2+7x+10 8.y^2-7x+129.a^2x^2+ax-8 10.x^4-7x^2-1811.2x^2-7x-15 12.5a^2+7a-613.x^4-4x^3+4x^2-9 14.x^2(x-y)+y-x15.a^2(a^2-1)-4a^2+4 16.5x^3-2x^2y+8y 化简求值：12-2（2x^y-3x+4y）+3（x^2y+4x-3y）其中x=1,y=-2 【7a^3-（a^2+a）】-【-3a^3-（2a^2-a）】其中a=2. 1.[(x-y)^2-2(y -x)]÷(x-y)2.[(3a-7)^2-(a+5)^2]÷(4a-24)3.(1-16^4)÷(4x^2+1)÷(2x+1)4.(x+y)^3-2(x+y)^2+(x+y)5.a(x-y)-a^2(y-x) 集合A={y|y=x²-4x+3},B={y|y=-x²-2x},那么A∩B=1、集合A={y|y=x²-4x+3},B={y|y=-x²-2x},那么A∩B=2、集合A={y|y=x²-4x+7},B={y|y=-x²-4x+3},那么A∩B=