The trick was to use what are called "complex numbers," which have a "real" part and an "imaginary" part. The imaginary part is a multiple of the number i , "the square root of minus one," which ...

When solving an equation it is important to find the value of one letter. Let's solve the equation 3 x + 4 = 10 To remove the + 4 we complete the inverse (opposite) operation by subtracting the 4.

For the first time, researchers have seen how light behaves during a mysterious phenomenon called 'imaginary time'.

Imaginary numbers—the square roots of negative numbers—are an inescapable part of quantum ... Scipione del Ferro, had given Fiore a formula for solving equations of the form x 3 + ax = b, ...