Answer:
2x² + 7x - 15
Explanation:
The concept you need to know is called foiling. Watch a video on it because it's easier to see than explain with text.
Other concept is a trinomial is a expression with three terms: ax² + bx + c
(2x-3)(x+5)
= (2x)(x) + (2x)(5) + (-3)(x) + (-3)(5)
= 2x² + 10x - 3x - 15
= 2x² + 7x - 15