Respuesta :

Answer:

8x2 - 8x -13

Step-by-step explanation:

Answer:8x^2-8x-13

Step-by-step explanation:

(3x^2+5x-8)+(5x^2-13x-5)

Removing brackets

3x^2+5x-8+5x^2-13x-5

Collect like terms

3x^2+5x^2+5x-13x-8-5

8x^2-8x-13