Question

How do you expand `(8x+4y)^2`?

Answer 1

`64x^2 + 64xy + 16y^2`

Explanation:

You can rewrite `(8x+4y)^2` to `(8x+4y)(8x+4y)`
Then multiply each number with another (expand the brackets) to get `64x^2 +32xy + 32xy + 16y^2` which can be simplified to `64x^2 + 64xy + 16y^2`