Is there an easy way to square this equation?
(ax^2+bx+c)? I always have to write it out and do it manually, is there a specific formula or something?
I was doing similar hs-tier shit for mid-sized polynomials some months ago OP. You would be well-served to look up the version of the binomial theorem which (may) apply here.
Hint: the terms in your thing can be thought of as their own variables, which can then be plugged into whatever version of the above (often involving "x" and "y")
Also a nitpick, this isn't pure pedantry, it actually does matter: your original thing is not a equation (what is it supposed to be equal to? zero? I don't see that), but instead an /expression/. Squaring an expression is what we're doing.