16. Rewrite the middle term as the sum of two terms and then factor completely.
x2 + x – 56
17. The product of two consecutive positive even integers is 288. Find the integers.
18. Label a, b, and c. 6x + 5x2 + 8
19. Complete the following statement. x2 + 13x + 42 = (x + 6)( )
20. Use the ac test to determine if the following trinomial can be factored. If it can be factored, find the values of m and n.
3x2 + 11x – 4
21. Factor completely. x3 – x2 – 20x
22. Factor by grouping. x3 – 3x2 + 4x – 12
23. Factor completely. x2 – 64
24. Factor completely. 3x2 – 5xy + 3x – 5y
25. Factor completely. 5x2 + 33x + 18