81 x^2 - 49 find the answer
Answers
Answered by
7
Answer:
81x²-49
9x²-7²
(9x+7)(9x-7)
Answered by
1
Answer:
Use the sum-product pattern
8
1
2
−
4
9
8
1
2
+
6
3
−
6
3
−
4
9
2
Common factor from the two pairs
8
1
2
+
6
3
−
6
3
−
4
9
9
(
9
+
7
)
−
7
(
9
+
7
)
3
Rewrite in factored form
9
(
9
+
7
)
−
7
(
9
+
7
)
(
9
−
7
)
(
9
+
7
)
Solution
(
9
−
7
)
(
9
+
7
)
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