Solving Quadratics by Factorising
Question 1:
5
x
2
−
14
x
−
3
=
0
x
=
−
1
5
or
3
Question 2:
3
x
2
+
20
x
+
25
=
0
x
=
−
5
3
or
−
5
Question 3:
3
x
2
−
19
x
+
6
=
0
x
=
1
3
or
6
Question 4:
4
x
2
+
17
x
+
4
=
0
x
=
−
1
4
or
−
4
Question 5:
9
x
2
−
18
x
+
8
=
0
x
=
4
3
or
2
3
Question 6:
6
x
2
−
23
x
+
20
=
0
x
=
4
3
or
5
2
