Respuesta :

zainebamir540

Answer:

The sum is −34x² + 12x − 25

Step-by-step explanation:

Let's simplify step-by-step.

x²+6x−5x²−25x²+6x−5x²−25

=x²+6x+−5x²+−25x²+6x+−5x²+−25

Combine Like Terms:

=x2+6x+−5x²+−25x²+6x+−5x²+−25

=(x²+−5x²+−25x²+−5x²)+(6x+6x)+(−25)

=−34x²+12x+−25