2x(x2)

(x2-3x)2-x(x2-3x)-2x2(x2-3x)2-x(x2-3x)-2x2(x2-3x)2-x(x2-3x)-2x2(x²-3x)²-x(x²-3x)-2x&#

约分x2+x-2/x2-x-6约分x2+x-2/x2-x-6约分x2+x-2/x2-x-6你看懂了么?（x-1）（x+2）---------------------------------------

(x2-x)2+6(x2-x)+9(x2-x)2+6(x2-x)+9(x2-x)2+6(x2-x)+9(x2-x)2+6(x2-x)+9=(x^2-x+3)^2

x2-2x-3x2-2x-3x2-2x-3|x2-2x-3|>x2-2x-3x²-2x-3>=0不等式不成立所以只有x²-2x-3

x2+x-2因式分解x2+x-2因式分解x2+x-2因式分解您好：x2+x-2=（x+2）（x-1）如果本题有什么不明白可以追问,如果满意请点击右下角“采纳为满意回答”如果有其他问题请采纳本题后另发点

X2+2X+aX2+2X+aX2+2X+ax²+2x+aX2+2X+a若a>=1无解若a

x2-x-2因式分解x2-x-2因式分解x2-x-2因式分解十字相乘学了没啊?这题直接十字相乘就可以啦!x2-x-21-211(x-2)(x+1)∴x2-x-2=(x-2)(x+1)x²-x

X2-2X-3X2-2X-3X2-2X-3-1X2-2X-3

x2-x+2x2-x+2x2-x+2x²-x+2x²-xx²-x+（1/2）²（x-1/2）²（x-1/2）²∵（x-1/2）²≥

-x2+2x-3-x2+2x-3-x2+2x-3-x²+2x+30(x-3)(x+1)>0x3即（-无穷,-1）U（3,+无穷）

x2-2x-24x2-2x-24x2-2x-24x2-2x-24=(x-6)(x+4)x2-2x-24=(x+4)(x-6)x²-2x-24=0（x-6）（x+4）=0所以x=6或-4利用十

x2+x-2x2+x-2x2+x-2

(x-x2)(x2+x-6)分之(x2+3x)(x2-3x+2)(x-x2)(x2+x-6)分之(x2+3x)(x2-3x+2)(x-x2)(x2+x-6)分之(x2+3x)(x2-3x+2)=x(x

计算(x3+x2+x+2)/(x2+1)计算(x3+x2+x+2)/(x2+1)计算(x3+x2+x+2)/(x2+1)(x3+x2+x+2)/(x2+1)=(x3+x+x2+1+1)/(x2+1)=

化简x3-x2/x2+x-2化简x3-x2/x2+x-2化简x3-x2/x2+x-2(x^3-x^2)/(x^2+x-2)=x^2(x-1)/[(x+2)(x-1)]=x^2/(x+2)=x²

(x2+2x2)2-6(x2+2x)+9(x2+2x2)2-6(x2+2x)+9(x2+2x2)2-6(x2+2x)+9(x²+2x)²-6(x²+2x)+9=(x

因式分解(x2-2x-x)(x2-2x+4)+9因式分解(x2-2x-x)(x2-2x+4)+9因式分解(x2-2x-x)(x2-2x+4)+9因式分解(x2-2x-2)(x2-2x+4)+9设x^2

x2-3x+2/x2-2x-3xx2-3x+2/x2-2x-3xx2-3x+2/x2-2x-3x(x-1)(x-2)/(x-3)(x+1)

化简x/x2+x除以x2+x-2/x2-1+x+1/x+2化简x/x2+x除以x2+x-2/x2-1+x+1/x+2 化简x/x2+x除以x2+x-2/x2-1+x+1/x+2 

解方程：X2--1/8(X2+2X)+X2+2X/3(X2--1)=11解方程：X2--1/8(X2+2X)+X2+2X/3(X2--1)=11解方程：X2--1/8(X2+2X)+X2+2X/3(X