Find the zeroes of the following quadratic polynomials and verify the relationship between the zeroes and the coefficients.
(i) x2–2x–8x^2 – 2x – 8x2–2x–8 (ii) 4s2–4s+14s^2 – 4s + 14s2–4s+1 (iii) 6x2–3–7x6x^2 – 3 – 7x6x2–3–7x (iv) 4u2+8u4u^2 + 8u4u2+8u (v) t2–15 t^2 – 15t2–15 (vi) 3x2–x–43x^2 – x – 43x2–x–4