Solving Quadratics by Factorising
Question 1:
x
2
+
2
x
+
1
=
0
x
=
-1
Question 2:
x
2
−
14
x
+
45
=
0
x
=
9
or
x
=
5
Question 3:
x
2
−
2
x
−
8
=
0
x
=
-2
or
x
=
4
Question 4:
x
2
+
3
x
−
18
=
0
x
=
-6
or
x
=
3
Question 5:
x
2
+
8
x
−
9
=
0
x
=
1
or
x
=
-9
Question 6:
x
2
−
x
−
12
=
0
x
=
4
or
x
=
-3
