Factor the following difference of perfect squares
x^2-81
2 answers:
Answer:
(x+9)(X-9)
Step-by-step explanation:
Since both terms are perfect squares, factor using the difference of squares formula, a
^2
−
b^
2
=
(
a
+
b
)
(
a
−
b
) where a
=
x and b
=
9
.
(
x
+
9
)
(
x
−
9
)
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