Solving Quadratics by Factorising
Question 1:
3
x
2
−
13
x
−
10
=
0
x
=
−
2
3
or
5
Question 2:
3
x
2
+
20
x
+
25
=
0
x
=
−
5
3
or
−
5
Question 3:
5
x
2
+
13
x
−
6
=
0
x
=
2
5
or
−
3
Question 4:
6
x
2
+
17
x
+
10
=
0
x
=
−
5
6
or
−
2
Question 5:
6
x
2
−
7
x
+
2
=
0
x
=
2
3
or
1
2
Question 6:
9
x
2
−
12
x
−
5
=
0
x
=
5
3
or
−
1
3
