Solving Quadratics by Factorising
Question 1:
4
x
2
−
17
x
+
15
=
0
x
=
5
4
or
3
Question 2:
5
x
2
−
19
x
+
12
=
0
x
=
4
5
or
3
Question 3:
4
x
2
−
15
x
+
9
=
0
x
=
3
4
or
3
Question 4:
3
x
2
+
4
x
−
15
=
0
x
=
5
3
or
−
3
Question 5:
9
x
2
+
3
x
−
2
=
0
x
=
−
2
3
or
1
3
Question 6:
9
x
2
−
24
x
+
16
=
0
x
=
4
3
or
4
3
