whats the pattern and the next 2 numbers of this question: -1, 2, 7, 17, _, _ .

Answer:
see explanation
Step-by-step explanation:
Consider the differences in the terms
2 - (- 1) = 2 + 1 = 3
7 - 2 = 5
14 - 7 = 7
The differences are 3, 5, 7 ← increasing in steps of 2
Thus the next 2 differences should be 9 and 11
Then the next 2 terms are
14 + 9 = 23
23 + 11 = 34