You can set it like this. This is a hyperbolic equation with the same focus, which ensures that C? =a？ +b？ However, we must pay attention to the λ value range of hyperbolic equations set in this way, as in this example:16-λ > 0，4+λ& gt； 0, that is, -4

If you like, you can also set it to: 16+λ and 4-λ, but the range of λ will become-16.

Have fun studying!