Sha04
Sha04
08-06-2017
Mathematics
contestada
factor the binomial 49x2-4
Respuesta :
konari24
konari24
08-06-2017
Rewrite
49
x2
49
x2
as
(
7x
)
2
7x
2
.
(
7x
)
2
−4
7x
2
-4
Rewrite
4
as
2^
2
.
(
7x
)^
2
−
2^
2
Since both terms are perfect squares, factor using the difference of squares formula,
a^2
−
b^2
=
(
a+b
)
(
a
−b
)
where
a=
7x
and
b=2.
(
7x
+2
)
(
7x
−2
)
Answer Link
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