1.若x^2+3x-5=a(x+1)^2+b(x+1)+c,则a=( ),b=( ),c=( )2.已知x+y=xy=4,求x^4+y^4,x^8+y^8的值.

x^2-6x+5= A(x-2)(x-3)B(x-6)(x+1) *-----------------------------------------------*| 6 4 X | 8 X X | X X 5 || X X X | X X X | X 7 8 || X X X | X X X | X X X ||---------------+---------------+--------------- || X X X | X X X | 5 1 X || X X X | X 6 X | X X X || 8 X X | 3 5 X | 2 X X || 若A={x|(1/2)^(x+2)(x-3)>1}B={x|(3a-x)/(x-a) 填九宫格帮帮忙.x x 6 x x 7 x x 98 x x x 3 x 1 x x 9 x x 6 x 5 x 3 x x x 3 x x x x 1 8x x x 9 x 1 x x x2 1 x x x x 6 x x x 6 x 7 x 3 x x 1 x x 9 x 2 x x x 47 x x 8 x x 5 x x 已知x=2π+1.求(X-1)+(X-2)+(X-3)+(X-4)+(X-5)+(X-6)+(X-7)+(X-8)+(X-9)+(X-10) 1.1/x-1/x-1(x^2-1/x-x+1)2.（（x+2/x^2-2x-（x-1/x^2-4x+4）除以4-x/x3.（x/y-y/x）除以（x/y+y/x-2）除以（1+y/x）先化简,后求值：1.（1/x-1+1）除以x/x^-1,其中x=22.a-3/2a-4除以（5/a-2-a-2）其中a=3 若a^2x=√2 -1,则(a^3x+a^-3x)/(a^x+a^-x)等于? a+x/x+1 ,x/x^2-2x-3 ,a/x^2+4x+3 （1） x-3/x-2 - x-5/x-4=x-7/x-6 - x-9/x-8(2) 已知x+3/(x-2)^2=A/x-2 + B/(x-2)^2 ,求A和B的值. 函数f(x)=a^2x^2-3X+1,g(x)=a^x^2=2x-5(a＞0,a≠1),若f(x)＞g(x),求x的取值范围正确：函数f(x)=a^2x^2-3X+1,g(x)=a^x^2+2x-5(a＞0，a≠1)，若f(x)＞g(x),求x的取值范围 (x-3/x-2)-(x-2/x-1)=(x-5/x4) -(x-4/x-3) 解方程x/(x-2)=2x/(x-3)+(1-x)/(x-5x+6) x(x-2)-2x(x+1)-3x(x-5) 其中x=负½ x(x+1)+(x+2)+(x+3)+(x+4)+(x+5) = 27求x 若x^3+x^2+x+1=0,求代数式1+x+x^2+x^3+x^4+x^5+...+x^2006+x^2007的值 x+2/x+1-x+4/x+3=x+6/x+5-x+8/x+7 x=? lim(x^3+2x+a)/(x-1)=5 求a ( x趋近于1) 1.(1/X-1 )-2=X^-3X/X^-12.（X/X+1)^+5(X/X+1)+6=03.（8(X^+2X)/X^-1）+ 3（X^-1)/X^+2x