解方程:5x(x-2)-4(x-2)=0

问题描述:

解方程:5x(x-2)-4(x-2)=0


因为:5x(x-2)-4(x-2)=0,所以:(x-2)(5x-4)=0
解得:x=2或x=4/5

5x(x-2)-4(x-2)=0
(5x-4)(x-2)=0
即:
5x-4=0或x-2=0
5x-4=0
解的:x1=0.8
x-2=0
解的x2=2

2或0.8

x=5/4
或者x=2

5x(x-2)-4(x-2)=0
则(x-2)(5x-4)=0
得x-2=0或5x-4=0
得x1=2,x2=4/5