1+5x-3x^因式分解
问题描述:
1+5x-3x^因式分解
答
解方程:1+5x-3x^2=0得
x=(5±√37)/6
1+5x-3x^2=-[x-(5-√37)/6]*[x-(5+√37)/6]=-1/36(6x-5+√37)(6x-5-√37)