2﹙10-0.5x﹚=-﹙1.5x-2﹚=?4x+3﹙2x-3﹚=12-﹙x+4)=?
2﹙10-0.5x﹚=-﹙1.5x-2﹚=?4x+3﹙2x-3﹚=12-﹙x+4)=?
x^5+x^4 = (x^3-x)(x^2+x+1)+x^2+x
已知 X=4- 根号3 求 (X*X*X*X-6X*X*X-2X*X+18X+23) / (X*X-8X+15)的值
(x-1)/﹙x²+3x+2﹚- 6/﹙x²-x-2﹚ -﹙x-10﹚/﹙x²-4﹚
解方程:﹙x-5﹚﹙x+3﹚+﹙x-2﹚﹙x+4﹚=49
解方程1/(x+x﹚+1/(x+3x+2﹚+1/(x+5x+6﹚+1/(x+7x+12﹚=4/21得
1x+2x+3x+4x+5x+6x+7x+8x+9x+10x+11x+12x+13x+14x+15x=550
x+2x+3x+4x+5x+6x+7x+8x+9x=9x-8x-7x-6x-5x-4x-3x-2x-x.x等于多少?
2x+3x+4x+5x+x+6x+7x=100
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),
解方程:(x-8)/(x-3)-(x-9)/(x-4)=(x+7)/(x+8)-(x+2)/(x+3)