Answer:
Which i think is the first one, there may just be a typing error.
Step-by-step explanation:
A polynomial of order n has the following format:

In which a is the leading coefficient,
are the roots.
If a root appears m times, they are said to have multiplicity m.
Leading coefficient of 1 and roots 21 and 31 with multiplicity 1

So the correct answer is:

Which i think is the first one, there may just be a typing error.
Answer:
Step-by-step explanation:
the diameter is the measurement that is all the way across the circle which is given to you so the diameter is 7cm. To find the radius it is half the way across the circle so it is half the diameter so in this case the radius would be 3.5cm
Answer:ndbdnd ndbdnd 192
Step-by-step explanation:
BBB as haha
The answer is 21 - 17, which = 4.
Or you could +4 to CM (17) which equals CQ (21)
Answer:
perimeter=9.25
Step-by-step explanation:
0.75+3+2(0.75)+4
0.75+3+1.50+4
9.25