How do you approximate real solutions in algebra?

Answer 1

Regarding algebra, Solution to Algebra Problems are not always accurate. Sometimes you also get approximate solutions to the problems. In that case what you can do is explained below:

If you solve and equation and you end up with some obscure number with loads of decimal places on your calculator then writing them all down probably isn't a good idea. Sometimes by doing a sum on a calculator you can make something even less accurate.

It is perfectly acceptable to give and answer as a square root or with constants such as pi in them. Just make sure that it is as simple as you can make it. for example writing sqrt(20) is not as good as writing 2(sqrt(5)).

So if you can do the question on paper and move numbers around by hand then you should. If however you have to do it on a calculator then just remember that your output cannot be more precise than your input.