# Find all real solutions

1. Oct 28, 2008

### jvignacio

1. The problem statement, all variables and given/known data
5x^2+2x+1=0

2. Relevant equations
-b +- sqrt{b^2 +- 4ac}

3. The attempt at a solution
once applied the quadratic formular, i got a minus under the discrimant which means i recieved an error. any other recommendations on how to solve this baby?

2. Oct 28, 2008

### Defennder

There's no error here if you copied the question correctly. The roots of this equation are complex.

3. Oct 28, 2008

The roots of this equation are complex, but you should be aware that the Quadratic Formula is not the one you typed: it is

$$\frac{-b \pm \sqrt{b^2 - 4ac}}{2a}$$

The version you have could cause you massive grief in the future.

4. Oct 28, 2008

### jvignacio

yes sorry i ment that formula. So this equation has no roots(complex)

5. Oct 28, 2008

### HallsofIvy

Staff Emeritus
It has no real number roots which was the question (I think) you intended to pose.