Solving Quadratics by Factorising
Question 1:
x
2
+
3
x
=
0
x
=
0
or
x
=
-3
Question 2:
x
2
−
9
=
0
x
=
3
or
x
=
-3
Question 3:
4
x
2
−
64
=
0
x
=
4
or
x
=
-4
Question 4:
x
2
+
5
x
+
4
=
0
x
=
-1
or
x
=
-4
Question 5:
x
2
−
2
x
=
24
x
=
6
or
x
=
-4
Question 6:
3
x
2
+
8
x
+
5
=
0
x
=
−
5
3
or
−
1
