Factorise by"Sum or difference of two cubes" . u may use a^3+b^3 and a^3-b^3
EXPLAIN PROPERLY please.
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x^3 + 6x^2 + 12x + 16
= x^3 + 2x^2 + 4x + 4x^2 + 8x + 16
= x(x^2 + 2x + 4) + 4(x^2 + 2x + 4)
= (x+4)(x^2 + 2x + 4)
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