(x^ - 4x+3)(x^+12x+35)+15 .
x^4表示( ) A.4x B.x+x+x+x c.x*x*x*x D.x+4
(x-1)^3(x+1)(x-2)/(x+4)
(x+1)(x+2)(x+3)(x+4)+1
(x+2/x+1)-(x+4/x+3)-(x+3/x+2)+(x+5/x+4)
计算(x*x+4x+5)/(x+2)-(x*x+6x+10)/(x+3)+1
解方程:(x-8)/(x-3)-(x-9)/(x-4)=(x+7)/(x+8)-(x+2)/(x+3)
(1) x-3/x-2 - x-5/x-4=x-7/x-6 - x-9/x-8
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
【计算(过程)】-x^2*(-x)^3+3x^3*(-x^2)-4(-x)*(-x)^4
3/x-1=4/x 6/x+1=x+5/x(x+1)
[x(x+1)+x平方(x-1)]+(-3x)
2/x^2+4x+3+2/x^2+8x+15+2/x^2+12x+35