x^2-2x x^2-1除以(x-1-2x-1x 1),其中x=根号2 1-搜答案-搜搜考试网

x-2除以6-x+2除以3等于1+x-1除以2两边乘6x-2-2(x+2)=6-3(x-1)-x-6=9-3x3x-x=9+62x=15x=7.5

X除以1*2+x除以2*3+x除以3*4+...+x除以2005*2006=X除以1-X除以2+X除以2-X除以3……-X除以2005+X除以2005-X除以2006=X除以1-X除以2006=200

方程x除以2+x除以6+x除以12+x除以2008乘2009再问：加上=2008,x=?再答：x(1-1/2+1/2-1/3+1/3-1/4+……+1/2008-1/2009)=2008x(1-1/2

((x+2)/(x^2-2x)-(x-1)/(x^2-4x+4))/((x^2-16)/(x^2+4x))=((x+2)(x-2)-(x-1)x)/((x-2)^2*x)/((x-4)/x)=((x-

X除以（X-2）+（X-9）除以（X-7)=(X+1)除以（X-1）+（X-8)除以（X-6）(x-2+2/x-2)+(x-7-2/x-7)=(x-1+2/x-1)+(x-6-2/x-6)1+(2/x

4x三次除以(-2x)平方-(2x平方-x)除以(1/2x)=4x^3/4x^2-(2x^2-x)/(1/2x)=x-2x(2x-1)/x=x-2(2x-1)=x-4x+2=-3x+2

琴瑟和谐,晨钟暮鼓

2

1/(x-1)+1/(x-4)-[1/(x-2)+1/(x-3)]=0通分(2x-5)/(x²-5x+4)-(2x-5)/(x²-5x+6)=0(2x-5)[1/(x²-

方程左边1/(xx+x)+1/(xx+3x+2)+1/(xx+5x+6)+1/(xx+7x+12)+1/(xx+9x+20)对分母因式分解得1/x（x+1)+1/（x+1）(x+2)+1/(x+2)(

x/2>x/33x>2x3x-2x>0x>0

x和乘号混淆了360=2X2X2X3X3X52X2=42X3=636=3X4X5X6所以x=3

有什么问题的亲欢迎向我或者我的团队【定向求助】哦我们将在第一时间内尽力为您解答

去分母：2(x+1)=3(x-1)2x+2=3x-32x-3x=-2-3-x=-5x=5经检验此为原方程的根

2x/(2x-1)+x/(x-2)=2两边乘以(2x-1)(x-2):2x(x-2)+x(2x-1)=2(2x-1)(x-2)2x^2-4x+2x^2-x=4x^2-10x+45x=4x=4/5

x^2+x-x^2-y=3x-y=3(x-y)^2=9x^2+y^2-2xy=9(x^2+y^2)/2-xy=9/2

1/(5-x)+2/(4-x)+3/(3-x)=-31/(5-x)+2/(4-x)=3/(x-3)-3[(4-x)+2(5-x)]/[(5-x)(4-x)]=[3-3(x-3)]/(x-3)(14-3

x=10

（1）27*3=816*9=54（2）56/7=89/3=12/4

x(x+1)-(xx+y)=-3x^2+x-x^2-y=-3x-y=-3(xx+yy)/2-xy=(x^2+y^2-2xy)/2=(x-y)^2/2=(-3)^2/2=9/2再问：是对的吧！再答：当然