x-2分之2x-6除以x的2次方-4x 4分之x-3-搜答案-百度作业网

(4-4x+x²)分之(2x-6)÷(x+3)×(3-x)分之(x²+x-6)=(x-2)²分之[2(x-3)]×(x+3)分之1×[-(x-3)]分之[(x+3)(x-

原式=(x²+x-2x)/(x+1)÷[(x-1)²/(x+1)(x-1)]=(x²-x)/(x+1)÷[(x-1)/(x+1)]=x(x-1)/(x+1)*(x+1)/

①3除以x分之2=3*x/2=3x/2②x分之3除以x^2分之6=3/x*x^2/6=x/2③x分之2x+1除以5分之6+12x=(2x+1)/x*5/(6+12x)=5/6x④x^2+3x+2分之x

把平方代入根号除以根号得出｛3根号X-2根号X｝除以3根号X=根号X除以3根号X=3分之1

x^2-x-6分解因式得(x+2)(x-3)x^2-4分解因式得(x-2)(x+2)故(x^2-x-6分之x^2-4+x-3分之x+2)=(x-2)/(x-3)+(x+2)/(x-3)=2x/(x-3

x的平方-9分之1-x-3分之1除以x-1分之6+2x=1/(x^2-9)-1/(x-3)*(x-1)/2(3+x)=(2-(x-1))/2(x^2-9)=(3-x)/2(x^2-9)=-(x-3)/

=(x+2)(x-1)/(x-3)×(x-3)²/(x+2)=(x-1)(x-3)=x²-4x+3

x的平方-2x+1分之x²-1+x-2分之2x-x²除以x=（x+1）（x-1）/（x-1）²-x(x-2)/(x-2)÷x=（x+1）/(x-1)-1=(x+1-x+1

=[2(x-3)/(x-2)^2]/(x+3)*[(x-2)(x+3)/(x+3)]=2(x-3)/[(x-2)(x+3)]=(2x-6)/(x^2+x-6)

分式的乘除：若x等于它的倒数,则[(x²-3x)/(x-3)]÷[(x-3)/(x²-6x+9)]∵x=1/x,∴x²=1,x=±1；[(x²-3x)/(x-3

若x等于它的倒数,x=1或x=-1x-3分之x^2-x-6除以x^2-5x+6分之x-3=x^2-4=1-4=-3再问：怎么算下x^2-4过程

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4-4x+x^2分之2x-6除以（x+3)乘以3-x分之x^2+x-6=2(x-3)/(x-2)²×1/(x+3)×(x+3)(x-2)/(3-x)=-2/(x-2)

2x分之(x+2)*(x^2+5x+6)分之(x^3-3x^2)÷(x^2+2x-3)分之(x^3-9x)=2x分之(x+2)*(x+2)(x+3)分之x^2(x-3)*x(x+3)(x-3)分之(x

再问：那个题不是这样的。是再答：再问：带入麻烦写一下，谢谢再答：什么叫合适的代入，最大值最小值？还是别的再问：然后从-根号下5小于x小于根号下5中选择一个合适的带入再答：可以x=21/(x+2)=1/

7/(x²+x)+4/(x²-x)=6/(x²-1)都乘以x(x+1)(x-1)得：7(x-1)+4(x+1)=6x解得：x=3/5

4-4x+4x的平方分之2x-6除以(x-3)乘以3-x分之(x+3)乘以(x-2)=(2x-6)÷4÷(x-3)×(x+3)÷(3-x)×(x-2)=(x-3)÷2÷(x-3)×(x+3)÷(3-x

数学之美团为你解答(x²-2x)/(x²-4)÷[x-2-(2x-4)/(x+2)]=x(x-2)/[(x+2)(x-2)]÷[(x²-4)/(x+2)-(2x-4)/(