Factorise 4a^9+4

Factorise completely
in Algebra 1 Answers by Level 1 User (180 points)

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1 Answer

4a^9 +4 =

4(a^9 +1) =

4((a^3)^3 + 1^3)=                     : a^3 + b^3 =  (a+b)(a^2 -ab + b^2)

4((a^3+1)(a^6 - a^3 +1)
by Level 8 User (36.8k points)

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