A:根据逆否命题是改变命题的条件及结论,且分别进行否定可知:命题“若x2-3x+2=0,则x=1”的逆否命题是“若x≠1,则x2-3x+2≠0,故A正确B:若x=1时,方程x2-3x+2=0,但是当x2-3x+2=0时,x=3或x=1,则x=2是x2-3x+2=0...
A:根据逆否命题是改变命题的条件及结论,且分别进行否定可知:命题“若x2-3x+2=0,则x=1”的逆否命题是“若x≠1,则x2-3x+2≠0,故A正确B:若x=1时,方程x2-3x+2=0,但是当x2-3x+2=0时,x=3或x=1,则x=2是x2-3x+2=0...