Answer:
x = 6
Explanation:
(x + 2)(2x - 5) = 56
2x^2 - x - 10 = 56
2x^2 - x - 66 = 0
(2x +11)(x - 6) = 0
2x +11 = 0
2x = -11
x = -5.5
Since you cannot measure length using a negative number, we cannot use this answer nor round.
x - 6 = 0
x = 6
Hope I helped!