(x-2)分之(x-3)除以[x 2 (2-x分之5)]-搜答案-大师作文网

X÷2/3÷4/5=120X÷(2/3×4/5)=120X÷8/15=120X=120×8/15X=64或者X÷2/3÷4/5=120X=120×4/5×2/3X=96×2/3X=64

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

原式=[√(x/4)-2x√(1/x)]÷3√x=√(x/4)÷3√x-2x√(1/x)÷3√x=(1÷3)×√(x/4÷x)-(2x÷3)×√(1/x÷x)=1/3×√(1/4)-(2x/3)×√(

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

8/3X=12,X=12x3/8,X=9/2.

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

原式=[(1-1分之x+5)-(1-1分之x+4))+(1-1分之x+3)-(1-1分之x+2)]*[(x+3)(x+5)]\(x^2+7x+13)=[(1分之x+2)-(1分之x+3)+(1分之x+

x^2-1分之x^2-3x+2除以（x+1分之2x-1-x+1)=(x+1)(x-1)分之(x-1)(x-2)除以【x+1分之2x-1-（x+1）分之x²-1】=(x+1)分之(x-2)÷【

3x÷1/5=2/73x=10/7x=10/21

2X/2/3=5/62X*3/2=5/63X=5/6X=5/6除3X=5/6*1/3X=5/18

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（x-3）/（2x+4）÷(5-x-2)/（x-2)=(x-3)/[2(x+2)]×(x-2)/(3-x)=(x-3)/[2(x+2)]×-(x-2)/-(3-x)=1/2

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)

x/(2/3)=75%,x=3/4*2/3,x=1/2

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

2x-4分之3-x除以[x+2-x-2分之5]=(3-x)/(2x-4)÷[(x+2)-5/(x-2)]=(3-x)/2(x-2)÷(x²-4-5)/(x-2)=(3-x)/(x²

（2-x)/(x-1)÷[x+1-3/(x-1）]=(2-x)/(x-1)÷[(x²-1-3)/(x-1)]=-(x-2)/(x-1)×（x-1)/[(x+2)(x-2)]=-1/(x+2)

x/(2/3)=7/8则x=(7/8)x2/3=7/12