Help with changing subjects!

im having trouble in changing subjects for equations, such as

4n-3nsquared= -1.. is there like a simple formula for changing the numbers around so it makes sense as in axsquared+bx+c=0?

I usually just do simple math to figure where each number goes like for 4n-3nsquared= -1, i usually think about 4-5=1 and rearrange it to make the equation make sense in the form of axsquared+bx+c=0...

This is for quadratics, so if the question is in the form of axsquared+bx+c=0, then its very easy to solve.

Can someone please help me with this?

Thanks in advance.