Find the product of :-
(a+b)(a-b)(a2+b2
)
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Actually,it's a property!
Similar properties are given in attachment,have a look on them.
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= (a+b) (a-b) (a²+b²)
= a²(a+b) + b²(a+b) + a²(a-b) + b²(a-b)
= a³ + ab + b²a + b³ + a³ - ab + b²a - b³
= a³ + a³ + ab - ab + b²a + b²a + b³ - b³
= 2a³ + 2b²a
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