Factorise:
(1) a³ + 8
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Answer:
a^3 + 8
a^3 + 2^3
(a + 2)(a + 2)(a + 2)
Step-by-step explanation:
a^3+b^3=(a+b)(a^2-ab+b^2)
so, a^3+2^3=(a+2)(a^2-a2+2^2)
therefore, (a+b) (a^2-2a+4)