x三次方-x²-x 1分之x²-2x 1-搜答案-智慧作业帮

=(x²+1)/(x-6)×(x+6)(x-6)/x(x²+1)=(x+6)/x

x-x分之1=3x^2-2+1/x^2=9x^2+1/x^2=11x^4+1=11x^2x^4=11x^2-1x-x分之1=3x^2-1=3xx^2=3x+1x的四次方-2x的三次方-2x的二次方-7

方根号x三再问：2x√x－X²√x³分之1＋6x√4分之x明白了吗？谢谢，帮我一下，要过程再答：好吧，

很多题目说的不详细,不清楚我理解的是否与你的题目一样原式=(1+x)[(x-1)/x(x+1)-(1-x)/x(x-1)]=(1+x)[(x-1)/x(x+1)+1/x(x+1)]=(x+1)[(x-

(x+y+z)^3-x^3-y^3-z^3=(x+y+z)^3-x^3-(y^3+z^3)=(x+y+z-x)[(x+y+z)^2+x(x+y+z)+x^2]-(y+z)(y^2-yz+z^2)=(y

x四次方-6x三次方+9x二次方分之x二次方-3x=x(x-3)/x²（x²-6x+9）=(x-3)/x(x-3)²=1/x(x-3)=1/(x²-3x)如追加

X^2(X-1)+X(X-1)+X-XX^3-X^2+X^2-X+X-X-------------------=-----------------=X(X-1)=X^2-XX-1X-1

x(x-1)(x-2)³(x+1)(x-1)(x-1)(x²+x+1)/[(3-4x)(x²+x+2)]>0x(x-1)³(x-2)³(x+1)(x&

-根号x因为-x的三次方能开根号,所以x是负数.又因为-x的三次方=（-x）的平方乘-x,所以能开出来个（-x）,再上下约分就可以得到x分之根号下-x三次方=-根号x

原式=(x+1)//(x²+1)*(x²+1)(x+1)(x-1)/(x+1)³-(x-3)/(x+1)=(x-1)/(x+1)-(x-3)/(x+1)=(x-1-x+3

x²-3x-1=0根据韦达定理得到x1+x2=3x1x2=-1x1^2+x2^2=(x1+x2)^2-2x1x2=9+2=11x1^3+x2^3=(x1+x2)(x1^2-x1x2+x2^2

x三次方-x+x+1分之1-x四次方=x(x²-1)-(x²+1)(x²-1)/(x+1)=x(x²-1)-(x²+1)(x+1)(x-1)/(x+1

x+1/x=3,两边平方得x²+1/x²+2=9即x²+1/x²=7x³+1/x³=(x+1/x)(x²-x×1/x+1/x&su

可以由十字相乘法分解因式为（3x-8)(x+1)=0,解得x1为-1,x2为8/3再问：完整可以吗

由韦达定理得x1+x2=3,x1*x2=3/2则x1²+x2²=(x1+x2)²-2x1*x2=9-3=6x1³+x2³=(x1+x2)(x1

(x的三次方分之1-x的平方分之1)·x-1分之x的三次方=(1/x³-1/x²)×x³/(x-1)=（1/x³-x/x³)×x³/(x-1

∫x³/(x²+1)dx=∫(x³+x-x)/(x²+1)dx=∫xdx-∫x/(x²+1)dx=(1/2)x²-(1/2)∫1/(x

=(x+2)/(x²-4)+(x-2)/(x²-4)+(x平方+4)分之2x+(x四次方+16)分之4x三次方=2x/(x²-4)+(x平方+4)分之2x+(x四次方+1

(3x分之y)的平方×(-y分之x)的三次方÷(-x分之2y)方=(y²/9x²)(-x³/y³)(x²/4y²)=-x³/36y

x三次方-2x平方+x

x^3-2x^2+2=x(x^2-2x+1)=x(x-1)^2