3x^2-5x=0初中方程怎么解?-搜答案-拍题作业网

(2x+3)2=5x4x+6=5xx=6

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^5-x^3-2x=0x(x^4-x^2-2)=0x(x²-2)(x²+1)=0x1=0,x2=√2,x3=-√2

编程解得x有6个解!x=-163.001306531085730889402404456827.90484104926952632108635925206247+.774353265124758763

这个不还解决0.906-0.8520.287-0.609*i-1.735*i-0.5641.735*i-0.5640.609*i+0.287你看可以吗?

4x(x-5.07)+x=8.634x-20.28+x=8.635x=8.63+20.285x=28.91x=5.78218-4x=2x+32x+4x=18-36x=15x=2.5(2x-4)*3=(

x²+6x+1=0x=【-6±√(6²-4·1·1）】/（2·1）x=【-6±4√2】/2x=-3±2√2x^4-x^2-6=0x²=【1±√(1²+4·1·6

再问：2x是怎么得来的

3x²-2x+1=0∵⊿=4-4·3=-8＜0∴方程；3X平方-2x+1=0无解.

2x²+8x-10-3x+6-4x=2x²+7x-4=7x=11

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)

两边乘x(x-1)(2x+3)x-5(x-1)=6x(x-1)2x²+3x-5x+5=6x²-6x4x²-4x-5=0x=(1±√6)/2分式方程要检验经检验,x=(1-

2x+3x-10=05x-10=05x=10x=2

2X-3X=-3-5-X=-8X=8

移项,把X项移到左边为3X,常数项移到右边为1,两边同时除以3得X=1/3

2x²+5x-3=02x²-x+6x-3=0（2x²-x）+（6x-3）=0x（2x-1）+3（2x-1）=0（2x-1）（x+3）=02x-1=0,x+3=0所以x1=

2x-3=5x-212x-5x=3-21-3x=-18x=6

5x-6x=3-2移动时只有移动的这个数变号把未知数和正常数各放一边上课没在听呢吧

1.x^2-2√5x+5=0(x-√5)^2=0x=√52.3x^2-x-14=0(3x-7)(x+2)=0x1=7/3x2=-23.(x-√2)^2-3=0(x-√2+√3)(x-√2-√3)=0x