Respuesta :

hellow4327

Answer:

5x^2 - 20

Step-by-step explanation:

(x-2)(3x+5) --> 3x^2+5x-6x-10 = 3x^2 - 1x - 10

(x-2)(2x+5) --> 2x^2+5x-4x-10 = 2x^2 + 1x - 10

3x^2 - 1x - 10 + 2x^2 + 1x - 10 = 5x^2 - 20