re: #435 ThomasLite

roots of (X^2-9)? well I must admit all my education on math has been in dutch so I’m not sure I understand but if I understand correctly it’s -3 and 3.
how the F**K is that remotely useful in daily life, or any kind of social sciences?
explain that to me sir. please, I’d very much like to know.

Well, it is grammar, no more or no less. Just like you may not care to learn the rules of writing, to do so eloquently, you need to know it.

As a step along the way of a larger problem such a thing could quickly come up, just like you need basic grammar to write a paragraph that makes sense.

As to where it is useful, tell me how you would figure out (as in calculate it on your own) an amortization table for instance without being able to solve basic algebraic expressions? How do you know a table is correct?