解这个方程急!x+(x+1)(x+2)+(x+3)

解这个方程急!x+(x+1)(x+2)+(x+3)=58

4个回答

方程化为：x^3+6x^2+12x-52=0
公式法解得
X1=1.91486764116886
X2=-3.95743382058443-3.3903748297059i
X3=-3.95743382058443+3.3903748297059i