8-x(x-2)=一又五分之四怎么解

8-x(x-2)=一又五分之四怎么解
2024-11-16 19:29:30
推荐回答(1个)
回答(1):

8-x^2+2x=1.8
x^2-2x+1=7.2
(x-1)^2=36/5
x-1=±6√5/5
x=(1-6√5)/2,x=(1+6√5)/2