(x-1)²=25/49,3(x-1)³+24=0
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(x-1)²=25/49,3(x-1)³+24=0
(x-1)²=25/49,3(x-1)³+24=0
(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
x1=1+5/7 x2=1-5/7
后面的没写
(x-1)²=25/49
x-1=-5/7,x-1=5/7
x=2/7,x=12/7
3(x-1)³+24=0
(x-1)³=-8
x-1=-2
x=-1
(x-1)²=25/49 ==> x=2/7, x=12/7
,3(x-1)³+24=0 ==> x=-1, x=2+根号3 *i , x=2-根号3*i