The imaginary number i depicts a number that ... what happens when (b 2 —4ac)—the expression under the square root in the quadratic formula—is negative. They might have brushed this under ...

Essentially, an imaginary number is the square root of a negative number and does ... such as electricity, as well as quadratic equations. In quadratic planes, imaginary numbers show up in ...

These questions are based on roots of quadratic equations, real and imaginary roots, number of roots in an interval etc. If the sum of all the coefficients of a quadratic equation is zero ...