32·8-9x=17`5的解
来源:学生作业帮助网 编辑:作业帮 时间:2024/08/29 11:17:45
(x+3)/(x+2)+(x+9)/(x+8)=(x+5)/(x+4)+(x+7)/(x+6)1+(x+5)/(x+2)(x+8)=1+(x+5)/(x+4)(x+6)x=-5再问:第二步那个1是怎么
将x-7/x-9分解成1+2/(x-9)其他分式同理则原方程等价于1/x-9+1/x-5=1/x-6+1/x-81/x-6-1/x-5=1/x-9-1/x-81/(x-5)(x-6)=1/(x-8)(
x(x^2-2)+2x^2(x+3)-3x(5x-7)=x(3x^2-9x+17)+2=>x^3-2x+2x^3+6x^2-15x^2+21x=3x^3-9x^2+17x+2=>2x=2x=1
设a=(x-1)(x-2)(x-3)(x-4)(x-5)(x-6)(x-7)(x-8)(x-9)那么y=a*(x-10);那么y^=a^*(x-10)+a*(x-10)^=a^*(x-10)+a那么y
[1-1/(x-4)]+[1-1/(x-8)]=[1-1/(x-7)]+[1-1/(x-5)]1/(x-4)+1/(x-8)=1/(x-7)+1/(x-5)(x-4+x-8)/(x-4)(x-8)=(
x(1+2+...+9)=x(9-8-7-...-1)x=0记得采纳啊
15x=23x-248x=24x=312+5x=3x-82x=-20x=-103(x-3)=9-(x+6)4x=9+9-6=12x=34+x=4x-173x=21x=7
原方程变成-1/(x-5)(x-6)=-1/(x-8)(x-9)即(x-8)(x-9)=(x-5)(x-6)化成x²-17x+72=x²-11x+30即6x=42,解得x=7再问:
/>因为:x-5/x-6+x-8/x-9=x-7/x-8+x-6/x-7,所以:1+1/(x-6)+1+1/(x-9)=1+1/(x-8)+1+1/(x-7)即:1/(x-6)+1/(x-9)=1/(
x=4原方程=10x-8x2+35x-10x2=72x-18x2-10845x-18x2=72x-18x2-10827x=108x=4
(1)(X+7)/(X+6)+(X+9)/(X+8)=(X+10)/(X+9)+(X+6)/(X+5)这类方程重在运算的技巧性,观察分母7+9=10+6;6+8=5+9所以先移项:(X+7)/(X+6
这道题不用那么复杂.先移项.(x-4)/(x-5)-(x-5)/(x-6)=(x-7)/(x-8)-(x-8)/( x-9)再通分.(x-4)(x-6)/(x-5)(x-6)-(x-5)(x
99-43X-9=90-43x48X-8+7X(X+8)x(X+8)=48x-8+7x^2+112x+64*7=7x^2+160x+440解方程17+7X=2X+325x=15x=33X+25=7X-
x^10+2x^9-2x^8-2x^7+x^6+3x^2+5x+1=x^10+x^9+x^9-x^8-x^8-x^7-x^7+x^6+3x^2+5x+1=(x^10+x^9)+(x^9-x^8)-(x
左右两边同乘以(X-5)(X-6)(X-8)(X-9)得到(X-4)(X-6)(X-8)(X-9)-(X-5)(X-5)(X-8)(X-9)=(X-5)(X-6)(X-7)(X-9)-(X-5)(X-
(23-17)m=306m=30m=516x+4x+2x=264(16+4+2)x=26422x=264x=1232x-7x-5x=420(32-7-5)x=42020x=420x=21
(x-4)/(x-5)-(x-5)/(x-6)=(x-7)/(x-8)-(x-8)/(x-9)1+1/(x-5)-1-1/(x-6)=1+1/(x-8)-1-1/(x-9)1/(x-5)-1/(x-6
x-4/x-5-x-5/x-6=x-7/x-8-x-8/x-91+1/x-5-1-1/x-6=1+1/x-8-1-1/x-91/x-5-1/x-6=1/x-8-1/x-9-1/(x-5)(x-6)=-
(x-4)/(x-5)+(x-8)/(x-9)=(x-7)/(x-8)+(x-5)/(x-6)1+1/(x-5)+1+1/(x-9)=1+1/(x-8)+1+1/(x-6)1/(x-5)+1/(x-9