Question

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

Answer 1

`(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`