(5/x²-3x-4)+(4/x²-5x-6)-(8/x²-10x+24)=?

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(5/x²-3x-4)+(4/x²-5x-6)-(8/x²-10x+24)=?(5/x²-3x-4)+(4/x²-5x-6)-(8/x²-1

(5/x²-3x-4)+(4/x²-5x-6)-(8/x²-10x+24)=?
(5/x²-3x-4)+(4/x²-5x-6)-(8/x²-10x+24)=?

(5/x²-3x-4)+(4/x²-5x-6)-(8/x²-10x+24)=?
x²+2x-34

xy²/(x²y-y) × x²/(x²+x)=(x²-3x)/(x²-5x) × 2x-10/(x²-6x+9)=化简求植x²-1/(x²-x-2)除以x/2x-4,其中x=1/2[x-x/(x+1)]除以[x/(2x-4)] ,其中x=√2+1 在线求助完全平方公式因式分解(1)-a²-1+2a(2)2x²y-x²-xy²(3)4x²-20x+25(4)(x²+1)²-4x²(5)(2x-y)²-2(2x-y)+1(6)(x+y)²-2(x²-y²)+(x-y)² (5/x²-3x-4)+(4/x²-5x-6)-(8/x²-10x+24)=? 已知关于x的多项式(2mx²-x²+3x+1)-(5x²-4y²+3x)不含x²项 -x²+4x-5 计算:5x²-[3x-(4x-3x)-2x²] 1.(3x²+10x²+13x-27)/(x²+2x-3)2.(2x²+x³-2)/(x²-1)3.已知A=(3x)²-21x³-2x²+11x-2 B=3x³-5x²-4x+1求a²/b² 4x²-[2x-(x²-2x+3)-2(x²-3x)] 计算 (x²-4分之x²+x+1)²÷(x三次方-3x²+2x÷x三次方)²×(x÷x+2)² , 已知x² -XY = 2,Y² -XY= 5,求x² - 4x Y+ Y² = 2x² + xY -3Y² = x² 已知x² -XY = 2,Y² -XY= 5,求x² - 4x Y+ Y² = 2x² + xY -3Y² = x² + xY- 2Y² =求x² - 4x Y+ Y² = 试说明不论X取何值代数式(x²+5x²+4x-1)-(-x²-3x+2x²-3)+(8-7x-6x²+x²)的 在实数范围内分解因式 x²+x-1 x²-2x-6 2x²+8x-7 x²-5xy+3y² -2x²-3x+6 4x& 整式乘法..1.3xy(x²y-xy²+xy)-xy²(2x²-xy+2x)2.(x-1)(x²-4x+3)-x(x²-5x+2) 通分:x²-8x+15分之x+4,x²+x-12分之x+5,x²-x-20分之x-3急!在线等 xy²/(x²y) - y×x²/(x²+x)=(x²-3x)/(x²-5x×2x) - 10/(x²-6x+9)=2a/(a²-4) - 1/(a-2)=2/(1-a ) - 1/(a-1)=x²-1/(x²-x-2)除以x/2x-4,其中x=1/2[x-x/(x+1)]除以[x/(2x-4)] ,其中x=√2+1 1.169(a+b)²-121(a-b)²2.(x-3)(x-5)+13.(2a-b)²+8ab4.y²-2y-x²+15.x³+3x²-4x-126.6x²+5x-47.(x²-2x)²+2(x²-2x)+18.(x²+3x+3)(x²+3x+5)+19.(m+n)²-4(m+n-1) 4x²-3x=52 5x²=4-2x 求减去-3x+2x²等于-3-5x+4x²的代数式