Question

(3t^2+6t)+(-9t^2-5t+5)

Answer 1

Answer:

-6t^2 + t + 5

Step-by-step explanation:

3t^2 +6t

-9t^2  -5t  + 5

Just add down

Answer 2

Answer:

-6t^2+1t+5

Step-by-step explanation:

(3t^2+6t)+(-9t^2-5t+5)

=3t^2+6t-9t^2-5t+5

=-6t^2+t+5