Question

How do you multiply `(3t^2-2w)^2`?

Answer 1

`9t^4-12t^2w+4w^2`

Explanation:

Use the quadratic expansion:
`(a+b)^2=a^2+2ab+b^2` with `a=3t^2` and `b=-2w`
This gives:
`(3t^2-2w)^2=9t^4-12t^2w+4w^2`