Mark Thomas is a British comedian, presenter and reporter from south London. He first came to light on the BBC Radio 1 comedy show Loose Talk in the late 1980s, which he presented with Kevin Day.
He currently presents a political comedy show, The Mark Thomas Comedy Product, after successfully establishing himself on the stand-up comedy circuit in the UK.
... real. (Geometrically, this means that the parabola intersects the x-axis in two points.)
If the discriminant is negative, then there are two different solutions x, both of ...