神马作文网2x=3=75解方程
来源：学生作业帮助网 编辑：作业帮 时间：2024/11/12 03:06:10
x(x-3)=6-2xx²-3x=6-2xx²-x-6=0(x-3)(x+2)=0x1=3x2=-2
2x+3x+5x=3210x=32x=3.2
（x+1)/x²-3=1/xx+1-3x²=x3x²=1x²=1/3x=±(√3)/3再问：1/x^2-1+2/x+1=3/x-1再答：������������
两边乘(x+3)(x-2)6x+18=x²-2x-x²-x+66x+18=-3x+69x=-12x=-4/3经检验,x=-4/3是方程的解
6x=12x=2
x1=1/3(10-7(2/(1357-9√[22717]))^(1/3)-(1/2(1357-9√[22717]))^(1/3));x2=10/3+1/6(1+i√[3])(1/2(1357-9√[
x^2-2x-3=0(x-3)(x+1)=0x=3,x=-1
7x-2x+3x=365x+3x=368x=36x=4.5
2x+3x+x=3406x=340x=170/3
2x*x+3x-3=02x*x+3x=3x*x+3x/2=3/2(x+3/4)^2=3/2+9/16(x+3/4)^2=33/16x+3/4=±√33/4x=(-3±√33)/4如还不明白,请继续追问
令2x-11=0,得x=11/2令x-3=0,得x=3令x-8=0,得x=8当x
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)
移项得2x+3x-4x=18合并同类项得X=18
6X^3=12X^3=2X=｛2的立方根｝
（7-2+3）X=368X=36X=9/2
转换一下x^2=3X-2x≠0X≠2/3X^2-3X+2=0(x-2)(X-1)=0x=2X=1
2x:3=x:72x*7=3*x14x=3x14x-3x=011x=0x=0
x(x-2)-2x^2=-3x^2-2x-2x^2=-3-2x-x^2=-3x^2+2x-3=0(x+3)(x-1)=0x=-3或x=1另外发并点击我的头像向我求助,请谅解,,你的采纳是我服务的动力.
X/12+2x/3=75x+8x=75x129x=75x12x=25x4=100
75%x=（x+25）2/33/4x=2/3x+25*(2/3)3/4x-2/3x=50/31/12x=50/3x=200