The value of a for which the equation` x^3+2ax+2=0` and `x^(4)+2ax^(2)+1=0` have a common root is "

The value of a for which the equation x^(3)+ax+1=0 and x^(4)+ax+1=0 have a common root,is

The number of values of a for which equations x^(3)+ax+1=0 and x^(4)+ax^(2)+1=- have a common root is a.0 b.1 c.2 d.Infinite

The value(s) of 'p' for which the equation ax^(2)-px+ab=0 and x^(2)-ax-bx+ab=0 may have a common root,given a,b are non zero real numbers,is -

If the equations 2x^(2)7x+1=0 and ax^(2)+bx+2=0 have a common root,then

If the equations 2x^(2)-7x+1=0 and ax^(2)+bx+2=0 have a common root, then

If the equation x^(2)+2x+3=0 and ax^(2)+bx+c=0 have a common root then a:b:c is