5x-x^2=4,求X

2024-12-28 09:49:55
推荐回答(2个)
回答1:

5x-x²=4
5x-x²-4=0
x²-5x+4=0
(x-4)(x-1)=0
x-4=0或x-1=0
得:x=4或x=1

回答2:

即x²-5x+4=0
(x-1)(x-4)=0
x=1,x=4