Find the zeroes of the following quadratic polynomials and verify the relationship between the zeroes and the coefficients. -
(i) `x^2-2x-8`
(ii) `4s^2-4s+1`
(iii) `6x^2-3-7x`
(iv) `4u^2+8u`
(v) `t^2-15`
(vi) `3x^2-x-4`

Explanation

To find the zeroes of the given quadratic polynomials and verify the relationship between the zeroes and the coefficients, we will follow these steps for each polynomial:

### (i) For the polynomial \( x^2 - 2x - 8 \)

1. **Set the polynomial equal to zero**:
\[ x^2 - 2x - 8 = 0 \]
...