Answer:
I think I explained the circle one before so I'll explain the left question because I wanted some points.
here,
area of circle is πr² which is given= 12 π cm²
so πr²= 12π
r= 2√3
d= 2r= 4√3
AB is diameter so AB= 4√3
Formula is y = mx + b
Answer y = - 2/3x - 3
For this case we have the following polynomial:

To answer the question, what we must do is rewrite the polynomial in its standard form.
We have then that the polynomial will be given by:

Therefore, we have the ordered polynomial in descending form of exponents.
Therefore, the second term of the polynomial is:

Answer:
The second term of the polynomial is given by:
