Solving Quadratics by Factorising
Question 1:
x
2
+
8
x
=
0
x
=
0
or
x
=
-8
Question 2:
x
2
−
49
=
0
x
=
7
or
x
=
-7
Question 3:
5
x
2
−
20
=
0
x
=
2
or
x
=
-2
Question 4:
x
2
−
2
x
−
80
=
0
x
=
-8
or
x
=
10
Question 5:
x
2
+
x
=
56
x
=
7
or
x
=
-8
Question 6:
5
x
2
−
34
x
+
24
=
0
x
=
4
5
or
6
