Respuesta :

Persona180

Answer:

6x^2+x-1

Step-by-step explanation:

(2x+5)+(4x^2+2x)+(x^2-3x)+(x^2-6)

=4x^2+x^2+x^2+2x+2x-3x+5-6

=6x^2+2x+2x-3x+5-6

=6x^2+x+5-6

=6x^2+x-1