What is $A+B$?

The roots of the quadratic $x^2+8x+4$ are the same as the roots of the quadratic $Ax^2+Bx+1$.

Find the volume v of the solid obtained by rotating the region bounded by the given curves about the specified line. y = x â’ 1 , y = 0, x = 5; about the x-axis v = sketch the region. sketch the solid, and a typical disk or washer.