Our first part is x

Our second part is 73 - x

The product of the two parts is:

x(73 - x) = 40

Multiplying through, we get:

-x^2 + 73x = 402

Subtract 40 from each side, we get:

-x^2 + 73x - 402 = 0

This is a quadratic equation. To solve this, we type it in our search engine, choose "solve Quadratic", and we get:

- x =
**6** - x =
**67**