[" If "X=1" is a common root of "ax^(2)+ax+2=0" and "x^(2)+x+b=0," then,"ab" ."],[03],[04],[01],[02]

If 1 is a common root of ax^(2) + ax + 2 = 0 and x^(2) + x + b = 0 "then" a.b =

If x=1 is a common root of equations ax^2+ax+3=0 and x^2+x+b=0 then ab=

If x = 1 is a common root of the equations ax^(2) + ax + 3 = 0 and x^(2) + x + b = 0 , then ab =

If one root is common is equations x^(2)-ax+b=0 and x^(2 ) +bx-a=0 , then :

If one root is common is equations x^(2)-ax+b=0 and x^(2 ) +bx-a=0 , then :

The roots of the equation x^(2) + ax + b = 0 are "______" .

If 8 and 2 are the roots of x^(2) + ax + c = 0 and 3,3 are the roots of x^(2) + dx + b = 0, then the roots of the equation x^(2) + ax + b = 0 are

Check if 0.2 is a root of the equation x^(2) - 0.4 = 0 .