若方程4x=3(x-1)-搜答案-拍题作业网

(x+1)(x+3)+4x=-13x方+4x+3+4x+13=0x方+8x+16=0(x+4)方=0x1=x2=-4

解x(6-x)-2x(x+1)-(x³-3x^4)/x²=46x-x²-2x²-2x-(x-3x²)=44x-3x²-x+3x²=

4/(x-2)+(x-1)/[(x-2)(x-3)]-2/(x-3)=0[4(x-3)+(x-1)-2(x-2)]/[(x-2)(x-3)]=03(x-3)/[(x-2)(x-3)]=0不知道解了~~

x(2x-4)+3x(x-1)=5x(x-3)+82x²-4x+3x²-3x=5x²-15x+88x=8x=1

1.x/x+1-1=3/（x+1)(x-2)两边乘以(x+1)(x-2)得x(x-2)-(x+1)(x-2)=3x²-2x-x²+x+2=3-x=1x=-1检验：x=-1是增根2.

题目应该是（x-1)(x-2)(x-3)(x-4)=24,不然解不了[(x-1)(x-4)][(x-2)(x-3)]=24[x^2-5x+4][x^2-5x+6]=24设x^2-5x+5=y所以(y-

记a=x^2+x,方程化为√(4a+1)-√(a+3)=√(a-2)√(4a+1)=√(a-2)+√(a+3)平方：4a+1=2a+1+2√(a-2)(a+3)a=√(a-2)(a+3)再平方a^2=

(x-3)(x-2)-(x-4)(x-1))/((x-1)(x-2))=((x-5)(x-4)-(x-6)(x-3))/((x-3)(x-4))2/((x-1)(x-2))=2/((x-3)(x-4)

方程两边同时乘以x²-1:(3x²+9x+7)(x-1)-(2x²+4x-3)(x+1)-(x³+x+1)=03x^3+9x^2+7x-3x^2-9x-7-(2

6x²-9x-4x+2x²=-2x+8x²-11-9x-4x﹢2x=-11-11x=-11x=1

2x+4x+6x...+100x=1-(x+3x+5x+...+99x)x(2+4+6+...+100)=1-x(1+3+5+...99)x(2+4+6+...+100)+x(1+3+5+...+99

2/x^2+x+3/x^2-x-4/x^2-1=0(2/x^2+3/x^2-4/x^2)+x-x-1=01/x^2-1=01/x^2=1x^2=1x=1或-1

x=4再问：请告知一下过程，谢谢！

x/(x-2)=2x/(x-3)+(1-x)/(x-5x+6)x/(x-2)=2x/(x-3)+(1-x)/(x-2)(x-3)x(x-3)/(x-2)(x-3)=2x(x-2)/(x-2)(x-3)

首先由题意得x+1≠0,x+7≠0,x+5≠0,x+3≠0,即x≠-1,x≠-7,x≠-5,x≠-3,则先简化方程(x+1+1)/(x+1)+(x+7+1)/(x+7)=(x+5+1)/(x+5)+(

(1/x-7)+(1/x-1)=(1/x-6)+(1/x-2)1/(X-7)-1/(X-6)=1/(X-2)-1/(X-1)(X-6-X+7)/[(X-7)(X-6)]=(X-1-X+2)/[(X-1

(3x+1)(3x-1)=(x+2)(9x-4)9x^2-1=9x^2+14x-8-14x=-7x=1/22(x-3)(x-2)-(x+3)²=(x-1)(x+1)2(x^2-5x+6)-(

方程-1/3+x=2x!

x=-1/3再问：解释再答：

（1）x(1-4x)=(1-x)2x解之得x=0或-1/2（2）x=-2或1/2