2. A quadratic pattern has a second term equal to 1, a third term equal to -6 and a fifth term equal to -14. 1.1.1. Calculate the second difference of this quadratic pattern. 1.1.2. Hence, or otherwise, calculate the first term of the pattern. 1;3;5 are the first three terms of the first differences of a quadratic sequence. The 7th term of the quadratic sequence is 35. 1.2.1. Determine the 6th and 5th terms of the quadratic sequence. (5) (2) 1.2.2. Determine the n" term of the quadratic sequence. (4) (5) [16]