A) (2X−1)2−4X2+1=0 B) 6X3 24X0C) 2X X 3 4X12 0 D) X3−5X2+X−5=0
Bài 3. Tìm x, biết:
a)
(
2
x
−1
)
2
−
4
x
2
+1=0
b)
6
x
3
24
x
0
c)
2
x x
3
4
x
12 0
d)
x
3
−5
x
2
+
x−5=0
Bài 3. Tìm x, biết:
a)
(
2
x
−1
)
2
−
4
x
2
+1=0
b)
6
x
3
24
x
0
c)
2
x x
3
4
x
12 0
d)
x
3
−5
x
2
+
x−5=0