Unformatted text preview: x+1=±sqrt(2) x=±sqrt(2)-1 These would be hard to find by just guessing. Also, note that there is a +/- symbol, showing that there are two roots, one using the + sign and the other using the – sign. This is usual for quadratics. A quadratic is also known as a second-degree polynomial, it can have at most two distinct roots (which do not have to be real numbers)....
View Full Document
- Spring '10
- Perfect square, Quadratic equations, Quadratic equation, second-degree polynomial