计算:(x+2)/2x * (x^3 - 3x^2)/(x^2 + 5x + 6) * (x^2 + 2x - 3)/(x^3 -_数学解答

计算:(x+2)/2x * (x^3 - 3x^2)/(x^2 + 5x + 6) * (x^2 + 2x - 3)/(x^3 - 9x)

人气：488 ℃　时间：2019-10-24 03:31:56

解答

就是因式分解
=(X+2)/2X*X^2(X-3)/(X+3)(X+2)*(X+3)(X-10/X(X+3)(X-3)
=(X-1)/2(X+3)