求一元三次方程的三个解:(x^3)-x(p^2)=0
问题描述:
求一元三次方程的三个解:(x^3)-x(p^2)=0
答
x³-xp²=0
x(x²-p²)=0
x(x+p)(x-p)=0
x1=0 x2=p x3=-p