# imperfect

1. ### How long does it take you to do square root of imperfect number in your mind?

How long does it take you to do square root of imperfect number in your mind, without calculator, pen nor paper? Can any one do a square root of any number up to 4 or 5 s.f. within 1 or 2 minutes, in your mind? Just wondering what is the quickest way to do square root with mind alone
2. ### PERFECT and IMPERFECT FIRMS

For a perfectly competitive firm and for an imperfectly competiitve market,explain how the index (P-MC)/P demonstrates the degree of pricing or market power. What would be the sifnificant consequences of the diffrences between perfectly competitive markets and imperfectly competitive markets?
3. ### Factoring Imperfect squares

Well, my question is how. Here's one from the sheet, I have the answers already, but everyone knows the answers don't matter in math >.> 1) x^4 + x^2 + 25 2) 2x^4 + 8 If you think these are both done with a pretty similar method, then you don't have to show me both. They just...