Solving Quadratics by Factorising
Question 1:
x
2
−
16
x
+
60
=
0
x
=
6
or
x
=
10
Question 2:
x
2
+
5
x
+
4
=
0
x
=
-4
or
x
=
-1
Question 3:
x
2
−
16
x
+
60
=
0
x
=
6
or
x
=
10
Question 4:
x
2
+
2
x
−
3
=
0
x
=
-3
or
x
=
1
Question 5:
x
2
−
4
x
−
21
=
0
x
=
-3
or
x
=
7
Question 6:
x
2
+
9
x
+
14
=
0
x
=
-7
or
x
=
-2
