Hello,
To find the solutions to this, you can either graph it on a graphing calculator or factor it.
If you factor it, first set it equal to 0 by subtracting 5 from both this.
The you can factor it to: (x - 2)(x - 4)(x + 1) = 0
Using the zero product rule, our solutions are 2, 4, and -1.
There are 3 integer solutions.
Good luck,
MrEQ