Solving Quadratics by Factorising
Question 1:
x
2
−
x
−
56
=
0
x
=
-7
or
x
=
8
Question 2:
x
2
−
x
−
2
=
0
x
=
-1
or
x
=
2
Question 3:
x
2
−
4
x
−
12
=
0
x
=
6
or
x
=
-2
Question 4:
x
2
−
8
x
+
12
=
0
x
=
6
or
x
=
2
Question 5:
x
2
+
x
−
42
=
0
x
=
6
or
x
=
-7
Question 6:
x
2
+
x
−
2
=
0
x
=
-2
or
x
=
1
