解方程:8x^3-2x^2-3x=0
问题描述:
解方程:8x^3-2x^2-3x=0
答
x(x^2-2x-3)=0
x(x-3)(x+1)=0
x1=0
x2=3
x3=-1
答
8x^3-2x^2-3x=0
x(8x^2-2x-3)=0
x(4x-3)(2x+1)=0
x1=0 x2=3/4 x3=-1/2