CHO CAC PHUONG TRINH
1. Cho cac phuong trinh:
a)2x-2=0;
b)x
2
+3x-4=0;
c)x
2
-3
=
0;
d)_x
2
+2x
=
o.
Phuong trinh nao la phuong trinh b~c hai mQt An? Hay xac djnh cac h~ s3
a,
b,
c
cua mlii phuong trinh b~c hai vila tim duqc.
1. Cho cac phuong trinh:
a)2x-2=0;
b)x
2
+3x-4=0;
c)x
2
-3
=
0;
d)_x
2
+2x
=
o.
Phuong trinh nao la phuong trinh b~c hai mQt An? Hay xac djnh cac h~ s3
a,
b,
c
cua mlii phuong trinh b~c hai vila tim duqc.