Solving Quadratics by Factorising
Question 1:
x
2
+
2
x
−
63
=
0
x
=
-9
or
x
=
7
Question 2:
x
2
−
5
x
+
6
=
0
x
=
2
or
x
=
3
Question 3:
x
2
−
x
−
42
=
0
x
=
-6
or
x
=
7
Question 4:
x
2
+
10
x
+
21
=
0
x
=
-3
or
x
=
-7
Question 5:
x
2
−
x
−
72
=
0
x
=
9
or
x
=
-8
Question 6:
x
2
−
7
x
+
10
=
0
x
=
5
or
x
=
2
