计算(2m)^2+(2-m)^2=2

来源:学生作业帮助网 编辑:作业帮 时间:2024/11/01 10:24:01
计算(2m)^2+(2-m)^2=2
xN@_i 3tϡ(,5&*cꢉ]>|Aƅ&]{Η{ݤ/YE=m# bB Jssð T{ IT#bf-K^X\F:+9yA5m/ߞ'I~3[<\}z_?4^}[b ~C4eXH5(@A(NuCu8gAx NޥЎ !HA[PH 8HB9y6p Ž7 oRZd8're IQ[ 1. I SSr=hZtfP瓟:

计算(2m)^2+(2-m)^2=2
计算(2m)^2+(2-m)^2=2

计算(2m)^2+(2-m)^2=2
(2m)²+(2-m)²=2
4m²+4-4m+m²=2
5m²-4m+2=0
Δ=b²-4ac=(-4)²-4×5×2=16-40=-24<0
所以该方程无实数根.