(a+b) ^3 - 8 (a - b) ^3 factorise
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1
Answer:
Correct option is
A
(a+b−2)(a
2
+2ab+b
2
+2a+2b+4)
(a+b)
3
−8
=(a+b)
3
−2
2
Using,a
3
−b
3
=(a−b)(a
2
+ab+b
2
)
=(a+b)−2[(a+b)
2
+2(a+b)+(2
2
)]
=(a+b−2)(a
2
+2ab+b
2
+2a+2b+4)
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