Find all integers n such that the quadratic 7x^2 + nx - 11 - 19 = 7x^2 - nx - 30 can be expressed as the product of two linear factors with integer coefficients.
+128474 7x^2 + nx - 30
(7x - 5) ( x + 6) n = 37
(7x + 5) (x - 6) n = -37
(7x - 6) ( x + 5) n = 29
(7x + 6) ( x - 5) n = -29
(7x + 15)(x - 2) n = 1
(7x - 15) ( x + 2) n = -1
(7x -2) ( x + 15) n = 103
(7x + 2) ( x - 15) n = -103
(7x + 30) ( x - 1) n = 23
(7x - 30) ( x + 1) n = -23
(7x - 1) ( x + 30) n = 209
(7x + 1) ( x - 30) n = -209
(7x + 3) ( x - 10) n = - 67
(7x - 3) ( x + 10) n = 67
(7x - 10) ( x + 3) n = 11
(7x + 10) ( x - 3) n = -11
