(5X-10):(6X+10)=4:5 得X=90怎么解
解分式方程(5-2x)/(x^2-x-12)=5x/(x^2+x-6)+(10-7x)/(x^2-6x+8)得
-10x的平方+4x+1=5x+2x平方-2.怎么得12x的平方+x-3=0把步骤写一下
5x-4/x-2=4x 10/3x-6-1 怎么解
解方程1/(x+x﹚+1/(x+3x+2﹚+1/(x+5x+6﹚+1/(x+7x+12﹚=4/21得
x/(1/4)+x/(3/7)+x/(3/5)=360,得x=45厘米这个方程怎么解
7x(x-6)+3x=4x(2x+5)怎么解这个方程
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),
⒈ 解方程 (X+7)/(X+6)+(X+9)/(X+8)=(X+10)/(X+9)+(X+6)/(X+5)
x-4/x-6+x-8/x-10=x-5/x-7+x-7/x-9
解方程.(5x/x²+x-6)+(2x-5/x²-x-12)=7x-10/x²-6x+8
1x+2x+3x+4x+5x+6x+7x+8x+9x+10x+11x+12x+13x+14x+15x=550