Answer:
answer is A and B. A on 1 b on 2
I think this is correct i could be wrong tho
I'm assuming you are talking about polynomials.
For example, I have x^2 + 2x + 1, and I want to add 2x^2 + x + 2
Then the like terms here are:
x^2 and 2x^2, 2x and x, 1 and 2, they are quadratic, linear and constant, respectively.
2. 112
3. 0.08
4. idk if there is a decimal between the 2 and 4 if there is your answer is 4.08 if there isn't your answer is 40.8
7. 0.04
8. 19.78
Perimeter = namely the length of outside bordering,
well, this is a PENTAgon, or PENTA=5 or namely 5 sides, is regular so each side is the same length, so we have a polygon with 5 sides each measuring 40cm, well, its perimeter is just 40+40+40+40+40 = 200.