x+5.8=11.5.x-6.5=8·7.3·5x=12.5...3.2x=16.
x+5.8=11.5.x-6.5=8·7.3·5x=12.5...3.2x=16.
(X+X)+(X-X)+(X*X)+(X/X)=100
3^x=2^x,求x.5^(x-1)·10^3x=8^x求x
x+2x+3x+4x+5x+6x+7x+8x+9x=9x-8x-7x-6x-5x-4x-3x-2x-x.x等于多少?
用递归法求y=x-(x*x*x/3!)+(x*x*x*x*x/5!)-(x*x*x*x*x*x*x/7!)+.
(x+12)(x-2)+(x+7)(x+8)-(x+5)(x-10),其中x=2
30X-2X=84 5.8X-X=60 6.6X-5X=8 4X-X=24 1.5X-X=1
x-4/x-5 - x-5/x-6=x-7/x-8 - x-8/x-9求x=?
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-5+8*X=7*X-2*X-1
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