Question

Describe the pattern in this sequence and write the next three terms of each sequence

5,-10,15,-20,.....

Answer 1

swithes sign every term and multiples of 5 right

Answer 2

It's definitely a quadratic sequence, the second differences are the same. If you want a function, the technique for that has slipped my memory, but the next three terms would be 25, -30, and 35.

Answer 3

Thank you very much