20. Factorize:
81x*- y"
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Sorry i no these answer
Answered by
0
Answer: Since both terms are perfect squares, factor using the difference of squares formula,
a
2
−
b
2
=
(
a
+
b
)
(
a
−
b
)
where
a
=
9
x
and
b
=
y
.
(
9
x
+
y
)
(
9
x
−
y
)
Step-by-step explanation:
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