If one zero of 3x² + 8x + k be the reciprocal of the other then k = ?

If one zero of the quadratic polynomial (k – 1) x² + kx + 1 is –4 then the value of k is

If –2 and 3 are the zeros of the quadratic polynomial x² + (a + 1) x + b then

If the sum of the zeros of the quadratic polynomial kx² + 2x + 3k is equal

If α, β are the zeros of the polynomial x² + 6x + 2 then ?