Use the foil method:
5x·x - 5x·3 + 2·x - 2·3
Now you have:
5x^2 - 15x + 2x - 6
= 5x^2 - 13x - 6 this is the answer
The product of the given factors can be found using the distributive property.
... (5x +2)(x -3 = 5x(x -3) + 2(x -3)
... = 5x² -15x +2x -6 . . . . . this has two like terms that can be combined
... = 5x² -13x -6
