TÌM X A) X – 2X – 1X X2 12 B) X 2X 2 – X – 2X – 28...
Bài 11: Tìm x
a)
x
– 2
x
– 1
x x
2
1
2
b)
x
2
x
2 –
x
– 2
x
– 2
8
x
c)
2
x
1
x
2
–
x
1
2
x
3
– 3
x
2
2
d)
x
1
x
2
2
x
4 –
x
3
– 3
x
2
16
0
e)
x
1
x
2
x
5 –
x
3
– 8
x
2
27