If a, b and c are in G.P., then the quadratic equations ax2+2bx+c=0 and dx2+2ex+f=0 have a common root if da, eb, fc are in
If a,b,c are in G.P, then the equation ax2 + 2bx + c = 0 and dx2 + 2ex + f = 0 have a common root if da,eb,fc are in