How do you multiply $(x+4)^2$ ?

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Answer 1 · 2015-04-08T19:10:09

$(x+4)^2$
means
$(x+4)xx(x+4)$

By the Distributive Property this can be written
$x xx (x+4) + 4 xx(x+4)$

Applying the Distributive Property again (but in the reverse form):
$(x^2 + 4x) + (4x +16)$

Collecting like terms:
$x^2+8x+16$

How do you multiply (x+4)^2(x+4)^2?