(x-1)²=25/49,3(x-1)³+24=0

问题描述:

(x-1)²=25/49,3(x-1)³+24=0

(x-1)²=25/49
则:
x-1=5/7或x-1=-5/7
得:
x=12/7或x=2/7
3(x-1)³=-24
(x-1)³=-8
x-1=-2
x=-1