A) X2 – 10X 160 B) X2 – 11 – 26X 0 C) 2X2 7 – 4X 0
Bài 8: Tìm x biết:
a)
x
2
– 10
x
16
0
b)
x
2
– 11 – 26
x
0
c)
2
x
2
7 – 4
x
0
Bài 8: Tìm x biết:
a)
x
2
– 10
x
16
0
b)
x
2
– 11 – 26
x
0
c)
2
x
2
7 – 4
x
0