Jimmy Webb is an idiosyncratic American popular musiccomposer. He is responsible for large number of popular and Top 10 hits sung by a disparate group of vocalists including Glen Campbell ("By the Time I Get to Phoenix," "Wichita Lineman," "Galveston"), Art Garfunkel ("All I Know"), Richard Harris ("MacArthur Park"), The Fifth Dimension ("Up, Up and Away") and many others.
... are two different solutions x, both of which are real. (Geometrically, this means that the parabola intersects the x-axis in two points.)
If the discriminant is negative, ...