In school we have been taught that *√(-1)* has no solutions, but what if it did. In 1545 an italian mathematician called Gerolamo Cardanoin thought why don’t we just assign *√(-1) *a variable and this created our imaginary unit *i*. Imaginary numbers are just the product of the imaginary unit *i* with any real number *b *so it can be written as *bi*. This is similar to the real numbers as our real unit is just 1 instead of *i*.

Complex numbers are the combination of a real number and an imaginary number so it can be written as *a+bi*…

Maths is pretty cool