Find the cube of : a + 2 - Vidyadip

Question

Find the cube of : $a + 2$

✓

Answer

$(a + 2)^3 $
$= (a)^3+ (2)^3+ 3\times a\times 2(a + 2)$
$= a^3 + 8 + 6a(a+ 2)$
$= a^3+ 8 + 6a^2+ 12a$
$= a^3+ 6a^2 + 12a+ 8$

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