Follow along as this tutorial shows you how to graph a quadratic equation to find the solution. Quadratic equations can have complex solutions. Lastly if b 2 - 4ac is less than 0 we have no solutions.
So in the numerator we get -b 0 and -b - 0.
One of the many ways you can solve a quadratic equation is by graphing it and seeing where it crosses the x-axis. Analyze quadratic equations in order to determine how many different real number solutions they have. The square root of a positive number is also some positive number. The following video gives another example of how to use the quadratic formula to find solutions to a quadratic equation that has complex solutions.