## Quadratic Sequences

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3 | 3 | 20 | 26 | 38 | 56 | 80 | 110 | n | n | |||

1 | Quadratic Sequences Questions | 2 | 3 | 7 | 12 | 21 | 34 | 51 | 72 | n | n | |

2 | 1. Find the nth term formula for the following quadratic sequence: 26, 38, 56, 80, 110 | 1 | 1 | 3 | 5 | 9 | 15 | 23 | 33 | n | n | |

3 | 2. Find the nth term formula for the following quadratic sequence: 12, 21, 34, 51, 72 | 1 | 1 | 13 | 15 | 19 | 25 | 33 | 43 | n | n | |

4 | 3. Find the nth term formula for the following quadratic sequence: 5, 9, 15, 23, 33 | 2 | 3 | 9 | 14 | 23 | 36 | 53 | 74 | n | n | |

5 | 4. Find the nth term formula for the following quadratic sequence: 15, 19, 25, 33, 43 | 1 | 3 | 18 | 22 | 28 | 36 | 46 | 58 | n | n | |

6 | 5. Find the nth term formula for the following quadratic sequence: 14, 23, 36, 53, 74 | 2 | 2 | 5 | 9 | 17 | 29 | 45 | 65 | n | n | |

7 | 6. Find the nth term formula for the following quadratic sequence: 22, 28, 36, 46, 58 | 1 | 2 | 19 | 22 | 27 | 34 | 43 | 54 | n | n | |

8 | 7. Find the nth term formula for the following quadratic sequence: 9, 17, 29, 45, 65 | 1 | 2 | 17 | 20 | 25 | 32 | 41 | 52 | n | n | |

9 | 8. Find the nth term formula for the following quadratic sequence: 22, 27, 34, 43, 54 | 3 | 3 | 19 | 25 | 37 | 55 | 79 | 109 | n | n | |

10 | 9. Find the nth term formula for the following quadratic sequence: 20, 25, 32, 41, 52 | 3 | 2 | 10 | 15 | 26 | 43 | 66 | 95 | n | n | |

11 | 10. Find the nth term formula for the following quadratic sequence: 25, 37, 55, 79, 109 | 3 | 3 | 11 | 17 | 29 | 47 | 71 | 101 | n | n | |

12 | 11. Find the nth term formula for the following quadratic sequence: 15, 26, 43, 66, 95 | 1 | 3 | 2 | 6 | 12 | 20 | 30 | 42 | n | n | |

13 | 12. Find the nth term formula for the following quadratic sequence: 17, 29, 47, 71, 101 | 1 | 2 | 16 | 19 | 24 | 31 | 40 | 51 | n | n | |

14 | 13. Find the nth term formula for the following quadratic sequence: 6, 12, 20, 30, 42 | 1 | 2 | 1 | 4 | 9 | 16 | 25 | 36 | n | n | |

15 | 14. Find the nth term formula for the following quadratic sequence: 19, 24, 31, 40, 51 | 2 | 2 | 13 | 17 | 25 | 37 | 53 | 73 | n | n | |

16 | 15. Find the nth term formula for the following quadratic sequence: 4, 9, 16, 25, 36 | 3 | 3 | 13 | 19 | 31 | 49 | 73 | 103 | n | n | |

17 | 16. Find the nth term formula for the following quadratic sequence: 17, 25, 37, 53, 73 | 1 | 1 | 18 | 20 | 24 | 30 | 38 | 48 | n | n | |

18 | 17. Find the nth term formula for the following quadratic sequence: 19, 31, 49, 73, 103 | 1 | 3 | 9 | 13 | 19 | 27 | 37 | 49 | n | n | |

19 | 18. Find the nth term formula for the following quadratic sequence: 20, 24, 30, 38, 48 | 3 | 2 | 13 | 18 | 29 | 46 | 69 | 98 | n | n | |

20 | 19. Find the nth term formula for the following quadratic sequence: 13, 19, 27, 37, 49 | 2 | 3 | 12 | 17 | 26 | 39 | 56 | 77 | n | n | |

21 | 20. Find the nth term formula for the following quadratic sequence: 18, 29, 46, 69, 98 | 1 | 2 | 12 | 15 | 20 | 27 | 36 | 47 | n | n | |

4 | 20 | |||||||||||

Quadratic Sequences Answers | 1 | 5 | ||||||||||

1. nth = 3n² + 3n + 20 | 12 | 60 | ||||||||||

2. nth = 2n² + 3n + 7 | 1 | 5 | ||||||||||

3. nth = n² + n + 3 | 6 | 30 | ||||||||||

4. nth = n² + n + 13 | 10 | 50 | ||||||||||

5. nth = 2n² + 3n + 9 | 2 | 10 | ||||||||||

6. nth = n² + 3n + 18 | 12 | 60 | ||||||||||

7. nth = 2n² + 2n + 5 | 7 | 35 | ||||||||||

8. nth = n² + 2n + 19 | 12 | 60 | ||||||||||

9. nth = n² + 2n + 17 | 11 | 55 | ||||||||||

10. nth = 3n² + 3n + 19 | 8 | 40 | ||||||||||

11. nth = 3n² + 2n + 10 | 4 | 20 | ||||||||||

12. nth = 3n² + 3n + 11 | 1 | 5 | ||||||||||

13. nth = n² + 3n + 2 | 11 | 55 | ||||||||||

14. nth = n² + 2n + 16 | 5 | 25 | ||||||||||

15. nth = n² + 2n + 1 | 6 | 30 | ||||||||||

16. nth = 2n² + 2n + 13 | 8 | 40 | ||||||||||

17. nth = 3n² + 3n + 13 | 4 | 20 | ||||||||||

18. nth = n² + n + 18 | 4 | 20 | ||||||||||

19. nth = n² + 3n + 9 | 1 | 5 | ||||||||||

20. nth = 3n² + 2n + 13 | 9 | 45 |