x 5分之x-4-x-6分之x-5
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原式=(x-1)(x-2)/(x-2)(x-3)*(x-3)(x-4)/(x-1)(x-4)=1有疑问,请追问;若满意,请采纳,谢谢!
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
2/5:x=2/3:8x×(2/3)=8×(2/5)=16/5x=(16/5)÷(2/3)=24/51.7x-0.4x=3.91.3x=3.9x=3.9÷1.3=3
原式=(x^2+3x)/(x^2+x-6)-(x+2)/(x^2-4)=x(x+3)/(x+3)*(x-2)-(x+2)/(x+2)*(x-2)=x/(x-2)-1/(x-2)=(x-1)/(x-2)
(1)2x/(x+1)=12x=x+1x=1(2)x/(x-2)-1/(x²-4)=1x(x+2)-1=x²-4x²+2x-1=x²-42x=-3x=-3/2(
希望能帮上忙,第一步x-7/x-9+x-3/x-5=x-4/x-6+x-6/x-8第二步(x-9)+2/x-9+(x-5)+2/x-5=(x-6)+2/x-6+(x-8)+2/x-8第三步1+2/x-
题目表达不清楚
(x-1)/3-(x+2)/6=(4-x)/2等式两边同乘6得:2(x-1)-(x+2)=3(4-x)去括号:2x-2-x-2=12-3x移项:4x=16x=4
(x-7)/19=(x+150)/3030(x-7)=19(x+150)30x-210=19x+285011x=3060x=3060/11再问:某校组织学生的实验基地参观,如果租用19座的客车,则能剩
X+(X+12)x5分之4=42X+0.8X+9.6=421.8X=32.4X=18X+(X+28)x4分之3=42X+0.75X+21=421.75X=63X=36X+(15+X)x5分之2=69X
(x+5)/(x+4)+(x+6)/(x+5)=(x+4)/(x+3)+(x+7)/(x+6)1+1/(x+4)+1+1/(x+5)=1+1/(x+3)+1+1/(x+6)1/(x+4)+1/(x+5
5分之6,9分之4,5,10,4分之1再答:�ף��ҵĻش��������
解原式=3(2-x)/3(x-4)(x+2)+(x+4)(x-4)/3(x+2)(x-4)=(6-3x)/3(x-4)(x+2)+(x²-16)/3(x+2)(x-4)=(6-3x+x
每个分式减去1(x-4-x+5)/(x-5)+(x-8-x+9)/(x-9)=(x-7-x+8)/(x-8)+(x-5-x+6)/(x-6)1/(x-5)+1/(x-9)=1/(x-8)+1/(x-6
4分之5X-X+3=3分之2X-7-6分之X-25X/4-X+3=(2X–7)/3-(X-2)/615X-12X+36=4(2X–7)-2(X-2)3X+36=6X–243x=60X=20
本人一次只回答一个算了吧或者你分开提问x/(x+2)=x/(x-1)两边乘(x+2)(x-1)x²-x=x²+2x3x=0x=0经检验,x=0是方程的解
x+2分之1+x^2-4分之x+6-x^-4x+4分之2x+1=x-2/x^2-4+x+6/x^2-4-(2x+1/x^-4x+4)=2x+4/x^2-4--(2x+1/x^-4x+4)=2/x--2