64x2-16
Step-by-step explanation:
The above expression is of the form :
(
a
−
b
)
(
a
+
b
)
where,
a
=
8
x
b
=
4
As per property:
(
a
−
b
)
(
a
+
b
)
=
a
2
−
b
2
Applying the above property to the expression provided:
(
8
x
−
4
)
(
8
x
+
4
)
=
(
8
x
)
2
−
4
2
=
64
x
2
−
16
