(81a^2 - 4) ÷ (9a + 2)
Answers
Answered by
0
Step-by-step explanation:
We know the identity a
4
+b
4
+a
2
b
2
=(a
2
+b
2
+ab)(a
2
+b
2
−ab)
Using the above identity, the equation 81a
4
+b
4
+9a
2
b
2
can be factorised as follows:
81a
4
+b
4
+9a
2
b
2
=(3a)
4
+(b)
4
+(3a)
2
(b)
2
=[(3a)
2
+(b)
2
+(3a)(b)][(3a)
2
+(b)
2
+(3a)(b)]
=(9a
2
+b
2
+3ab)(9a
2
+b
2
−3ab)
Answered by
0
Answer:
597.09
Step-by-step explanation:
(81a^2-4)÷(9a+2)
(6568a÷11a)
6585a/11a
597.09
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