The answer is D I’m pretty sure!? Hopefully you got it right!!!!!!!
Answer:

Step-by-step explanation:
We are asked to multiply the given polynomials.

Multiply each term of the first polynomial to each term of the second polynomial.



Add the results

Combine the like terms

The answer is written in descending powers of x.
None 3 * 66 = 198
ALL triangles have a total degree measure of 180 degrees