1.2x-4=x+4

(X-1)(X-2)=X*X-3X+2X*X-3X+2=(X-1)(X-3)X*X+4X+4=X(X-4)+4X*X+Y*Y=(X+Y)(X-Y)哪一个因式分解是正确的(X-1)(X-2)=X*X-3

x^2+x^-2=x^4,化简(x+x^-1+x2)(x-x^-1+x²)（-x+x^-1+x²）(x+x^-1-x²)第18题,x^2+x^-2=x^4,化简(x+x^

3X-18=13.21.5X-X=64X+1.2X=263X-18=13.21.5X-X=64X+1.2X=263X-18=13.21.5X-X=64X+1.2X=263x-18=13.23x=13.

x+1.5x=7500x-0.85x=34x-1.2=74x+1.5x=7500x-0.85x=34x-1.2=74x+1.5x=7500x-0.85x=34x-1.2=74x+1.5x=75002.

已知X=4-根号3求(X*X*X*X-6X*X*X-2X*X+18X+23)/(X*X-8X+15)的值紧急,,明天有用,,已知X=4-根号3求(X*X*X*X-6X*X*X-2X*X+18X+23)

x-2x+3x-4x+5x.+99x-100x=25求解x-2x+3x-4x+5x.+99x-100x=25求解x-2x+3x-4x+5x.+99x-100x=25求解x(1-2+3-4+...+99

先化简,再求值：（x-2/x-x+2/x)/x-2/4x,x=2011先化简,再求值：（x-2/x-x+2/x)/x-2/4x,x=2011先化简,再求值：（x-2/x-x+2/x)/x-2/4x,x

2x+3x+4x+5x+x+6x+7x=1002x+3x+4x+5x+x+6x+7x=1002x+3x+4x+5x+x+6x+7x=1002x+3x+4x+5x+x+6x+7x=10028x=100x

(x-3/x-2)-(x-2/x-1)=(x-5/x4)-(x-4/x-3)(x-3/x-2)-(x-2/x-1)=(x-5/x4)-(x-4/x-3)(x-3/x-2)-(x-2/x-1)=(x-5

x(x+1)+(x+2)+(x+3)+(x+4)+(x+5)=27求xx(x+1)+(x+2)+(x+3)+(x+4)+(x+5)=27求xx(x+1)+(x+2)+(x+3)+(x+4)+(x+5)

提取公因式:已知x*x-5x+1=0求x*x*x-4x*x-4x-1提取公因式:已知x*x-5x+1=0求x*x*x-4x*x-4x-1提取公因式:已知x*x-5x+1=0求x*x*x-4x*x-4x

X+X+X+(X-1)+(X-2)+(X-3)+(X-4)=10(X-3)+(X-4)X+X+X+(X-1)+(X-2)+(X-3)+(X-4)=10(X-3)+(X-4)X+X+X+(X-1)+(X

x+2/x+1-x+4/x+3=x+6/x+5-x+8/x+7x=?x+2/x+1-x+4/x+3=x+6/x+5-x+8/x+7x=?x+2/x+1-x+4/x+3=x+6/x+5-x+8/x+7x

x-4/x-5-x-5/x-6=x-7/x-8-x-8/x-9求x=?x-4/x-5-x-5/x-6=x-7/x-8-x-8/x-9求x=?x-4/x-5-x-5/x-6=x-7/x-8-x-8/x-

解方程(x/x(x+2))+(x/(x+2)(x+4))+.+x/(x+8)(x+10)=1解方程(x/x(x+2))+(x/(x+2)(x+4))+.+x/(x+8)(x+10)=1解方程(x/x(

x^4+x^3+x^2+x+1=0,x^2006+x^2005+x^2004+x^2003+x^2002x^4+x^3+x^2+x+1=0,x^2006+x^2005+x^2004+x^2003+x^

（x-4)-(x+4)=0.25x（x-4)-(x+4)=0.25x（x-4)-(x+4)=0.25xX=-32x-4-x-4=0.25x-8=0.25x0.25x=-8x=-32原是为x-4-x-4

52-X=4+X+X52-X=4+X+X52-X=4+X+X52-x=4+x+x52=4+3x……两边同时加x3x=48x=164+X+X+X=523X=52-4=48X=48/3=1652-X=4+

x-x/4-120=x/2x-x/4-120=x/2x-x/4-120=x/2x－(1/4)x－120=(1/2)x(3/4)x－(2/4)x=120(1/4)x=120x=480x-x/4-x/2=

4X+0.5X=13.5X4X+0.5X=13.5X4X+0.5X=13.5X9x=0x=0