大师作文网2-1 4x=3解方程
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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
答：（1）x^2-14x=851（x-7）^2=900x-7=±30x=37或x=-23(2)3x^2-9x+5=0x^2-3x+5/3=0(x-3/2)^2=7/12x-3/2=±√21/6x=3/
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
X^2+3x=14x²+3x+(3/2)²=14+(3/2)²(x+3/2)²=65/4x+3/2=±√65/2x=-3/2±√65/2x=（-3±√65）/2
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
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)
14x=3(1.44-2x)14x=3*1.44-3*2x14x+3*2x=3*1.4420x=4.32x=4.32÷20x=0.2163.4+4x=8（x-1.5）3.4+4x=8x-8*1.58x
2x:3=x:72x*7=3*x14x=3x14x-3x=011x=0x=0
（3x+2）（x+3）=x+143x^2+11x+6=x+143x^2+10x-8=0(3x-2)(x+4)=0x1=2/3x2=-4
【1】3x=x＋1003x－x=1002x=100x=50【2】4x＋＋14=28＋3x4x－3x=28－14x=14
3x/5=2x-14-7x/5=-14x=10
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.
通分得3/6×+4/6×＝147/6×＝14×=14÷7/6×=14×7/6×=12够详细吧,
4x-2(10-x)-10=5(14-x)-3[10-(14-x)]4x-20+2x-10=70-5x-3[10-14+x]6x-30=70-5x+12-3x14x=112x=8