换元法解方程y²-7/2y+3=0值
问题描述:
换元法解方程y²-7/2y+3=0值
答
y²-7/2y+3=0
(y-1.5)(y-2)=0
y1=1.5 y2=2
换元法解方程y²-7/2y+3=0值
y²-7/2y+3=0
(y-1.5)(y-2)=0
y1=1.5 y2=2