10×﹙x-5﹚+x+[10x+﹙x-5﹚=121 怎么算,
(x+5)^2=10+(x+5)x怎么算
(x+12)(x-2)+(x+7)(x+8)-(x+5)(x-10),其中x=2
(x+5)²-(x-2)(x-3) =x²+10x+25-(x²-5x+6) *5x怎么来
x+4/x﹙x-1﹚=3/x-1怎么解?
5x+10=3x+40 怎么算
10+5x+2.8=x 怎么算?
3X+5=2X+10怎么算 asdasd
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+7/x+6)+ (x+9/+x+8)=(x+10/x+9)+(x+6/x+5)
1.x+9/x+8- x+10/x+9=x+6/x+5- x+7/x+6;
⒈ 解方程 (X+7)/(X+6)+(X+9)/(X+8)=(X+10)/(X+9)+(X+6)/(X+5)