5x/(x+3)(x+2)+(2x-5)/(x-4)(x+3)=(7x-70)/(x+2)(x+4)
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5x/(x+3)(x+2)+(2x-5)/(x-4)(x+3)=(7x-70)/(x+2)(x+4)
求求大家帮个忙,怎么接着道方程啊!
求求大家帮个忙,怎么接着道方程啊!
你题目 校对一下!如果是5x/(x+3)(x+2)+(2x-5)/(x-4)(x+3)=(7x-70)/(x+2)(x-4)那么1/[X+3]*5X/[X+2]+1/[X+3]*[2X-5]/[X-4]=7x-70)/(x+2)(x+4) 1/[X+3]*{5X/[X+2]+[2X-5]/[X-4]}=7x-70)/(x+2)(x+4) 1/[X+3]*{5X*[X-4]+[2X-5]*[X+2]}/[X+2][X-4]=7x-70)/(x+2)(x-4) 1{5X*[X-4]+[2X-5]*[X+2]}/[X+3]=7x-70 5X*[X-4]+[2X-5]*[X+2]=[7X-70][X+3] 5XX-20X+2XX+4X-5X-10=7XX+21X-70X-210 X=-50/7
(1) x-3/x-2 - x-5/x-4=x-7/x-6 - x-9/x-8
x+2x+3x+4x+5x+6x+7x+8x+9x=9x-8x-7x-6x-5x-4x-3x-2x-x.x等于多少?
x^5+x^4 = (x^3-x)(x^2+x+1)+x^2+x
2x+3x+4x+5x+x+6x+7x=100
|X-1|+|X-2|+|X-3|+|X-4|+|X-5|+|X-6|+|X-7|+|X-8|+|X-9|+|X-10|
5x/(x+3)(x+2)+(2x-5)/(x-4)(x+3)=(7x-70)/(x+2)(x+4)
x+2/x+1-x+3/x+2-x+4/x+3+x+5/x+4
已知1+x+x^2+x^3=0,求x+x^2+x^3+x^4+x^5+x^6+x^7+x^8的值
y=(x-1)(x-2)(x-3)(x-4)(x-5)(x-6)(x-7)(x-8)(x-9)(x-10)的导数在x=1
设函数f(x)=(x-1)(x-2)(x-3)(x-4)(x-5)(x-6)(x-7)(x-8)(x-9)(x-10),
(x+2/x+1)-(x+4/x+3)-(x+3/x+2)+(x+5/x+4)
解方程(x-2)/(x-3)-(x-3)/(x-4)=(x-5)/(x-6)-(x-6)/(x-7)