Word problem algebra

Question

The product of a number decreased by 2 and the same number increased by 4 is 91

Answer 1

(x-2)(x+4) = 91

x^2 +2x -8 = 91

x^2 +2x - 99 = 0

(x+11)(x-9) = 0

x-9 = 0

x = 9

or

x+11 = 0

x = -11

the number is -11 or 9