Question

How do you simplify `(7sqrt5)^2`?

Answer 1

`245`

Explanation:

`(a* b)^2` can be expanded as `(a^2 * b^2)`

So, `(7* sqrt 5)^ 2` can be written as `7^2 * (sqrt 5)^ 2` => `49* 5` => `245`