Recent content by Remos

Ok, but what do I have to take square root from to get -10?

By square(...) I meant that -> square root from (...)

I had this assignment in math class and it doesn't just add up. x + square(5x + 10) - 8 = 0 Nothing too difficult to solve. And the answer is: x1 = 18 if square(5 * 18 + 10) = -10 x2 = 3 if square(5 * 3 + 10) = 5 But teacher says that x1 is not correct. To me it is not logical...