5) (2n+2)(6n+1) 6) (4n+1)(2n+6) 7) (x-3)(6x-2) 8) (8p-2)(6p+2) 9) (6p+8)(5p-8) 10) (3m-1)(8m+7) 11) (2a-1)(8a-5) 12) (5n+6)(5n-5)

5) \((2 n+2)(6 n+1) = 12n^2 + 4n + 2\)6) \((4 n+1)(2 n+6) = 8n^2 + 26n + 6\)7) \((x-3)(6 x-2) = 6x^2 - 20x + 6\)8) \((8 p-2)(6 p+2) = 48p^2 + 8\)9) \((6 p+8)(5 p-8) = 30p^2 - 64p - 64\)10) \((3 m-1)(8 m+7) = 24m^2 + 21m - 7\)11) \((2 a-1)(8 a-5) = 16a^2 - 14a + 5\)12) \((5 n+6)(5 n-5) = 25n^2 + 5n - 30\)