Which sum is equal to x2+6x-5x2-25 x 2 + 6 x - 5 x 2 - 25?

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