Question
Factorize: $8x^3 + y^3 + 12x^2y + 6xy^2$

Answer

$8x^3 + y^3 + 12x^2y + 6xy^2$
$= (2x)^3 + y^3 + 3 \times (2x)^2 \times y + 3(2\times ) \times y^2$
$= (2x + y)^3 \big[\because a^3 + b^3 + 3a^2b + 3ab^2 = (a + b)^3\big]$
$= (2x + y)(2x + y)(2x + y)$
$\therefore 8x^3 + y^3 + 12x^2y + 6xy^2$
$= (2x + y)(2x + y)(2x + y)$

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