X.(X十1)x(X十2)x(x十3) =360

X.(X十1)x(X十2)x(x十3) =360 已知1十x十x^2 十x^3=0,求x十x^2十x^3十x^4+x^5十x^6+x^7十x^8的值 x十1x十6十x怎么? X十X十3/1一X二24 X-1二2X十3 化简求值x^2十2x十1/x十2÷x^2-1/x-1-x/x十2,x竽等于根号3 解方程(1/x十1)十(1/x十4)二(1/x十2)十(1/x十3) 1/(x^2一4x十3)十1/(x^2一8x十15)十1/(x^2-12x十35)十1/(x^2一16x十63)= (x^3十3x^2-5x十6)-(2x^2-5x十1)-(x^3十x^2-2) 3x(2x十1)一(2x十3)(2x十3)(x一5) 解方程:(x一3)(x十1)=x(2x十3)一(x的平方十1) (x十3)(x一3)十8>(x十5)(x一1)解不等式 (x十k)(x十k十1)十四分之一 2(x十2) x十3/x+2=k/(x+1)(x+2)十1 25题 2x十8十3x十8十4x十8=?请算出这道题目求士寸佰了⑥ 8×十9x十10x十16x 2(x十3)=3(0.5x十10)