Solving Quadratics by Factorising
Question 1:
x
2
−
10
x
=
0
x
=
0
or
x
=
10
Question 2:
x
2
−
100
=
0
x
=
10
or
x
=
-10
Question 3:
2
x
2
−
200
=
0
x
=
10
or
x
=
-10
Question 4:
x
2
+
x
−
90
=
0
x
=
-10
or
x
=
9
Question 5:
x
2
+
6
x
=
27
x
=
3
or
x
=
-9
Question 6:
2
x
2
−
7
x
−
30
=
0
x
=
−
5
2
or
6
