How do you multiply $(x+2)^3$ ?

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Answer 1 · 2016-07-11T19:30:50

$x^3 + 6x^2 + 12x + 8$

A rule of cubing binomials: $(a+b)^3 = a^3+3a^2b+3ab^2+b^3$
This is an easier method to follow as opposed to multiplying out the binomials.

$(x+2)^3$

$x^3 + 3(x^2)(2) + 3(x)(2^2) + 2^3$

$x^3 + 6x^2 + 12x + 8$

How do you multiply (x+2)^3(x+2)^3?