This question already has an answer here:
For example, $x^2 + 5x + 7$ is $(x + 2.5)^2 + 0.75$ but how would you figure that out? It's useful for proving any quadratic is greater than 0 but it's not always easy to find so. Thanks!
edit: Sorry I'm dumb I didn't see the + 0.75, this is just the vertex form.