Solving Quadratics by Factorising
Question 1:
x
2
+
6
x
=
0
x
=
0
or
x
=
-6
Question 2:
x
2
−
49
=
0
x
=
7
or
x
=
-7
Question 3:
2
x
2
−
18
=
0
x
=
3
or
x
=
-3
Question 4:
x
2
−
7
x
+
6
=
0
x
=
6
or
x
=
1
Question 5:
x
2
+
18
x
=
−
81
x
=
-9
Question 6:
3
x
2
+
8
x
+
5
=
0
x
=
−
5
3
or
−
1
