Answer:
![x^4 + 4x^3 + 6x^2 + 7x + 2](https://tex.z-dn.net/?f=x%5E4%20%2B%204x%5E3%20%2B%206x%5E2%20%2B%207x%20%2B%202)
Step-by-step explanation:
We are asked to multiply the given polynomials.
![(x^ 2 + 3x + 1) \times (x^2 + x + 2)](https://tex.z-dn.net/?f=%28x%5E%202%20%2B%203x%20%2B%201%29%20%5Ctimes%20%28x%5E2%20%2B%20x%20%2B%202%29)
Multiply each term of the first polynomial to each term of the second polynomial.
![x^ 2 \times (x^2 + x + 2) = x^4 + x^3 + 2x^2](https://tex.z-dn.net/?f=x%5E%202%20%20%5Ctimes%20%28x%5E2%20%2B%20x%20%2B%202%29%20%3D%20x%5E4%20%2B%20x%5E3%20%2B%202x%5E2)
![3x \times (x^2 + x + 2) = 3x^3 + 3x^2 + 6x](https://tex.z-dn.net/?f=3x%20%20%5Ctimes%20%28x%5E2%20%2B%20x%20%2B%202%29%20%3D%203x%5E3%20%2B%203x%5E2%20%2B%206x)
![1 \times (x^2 + x + 2) = x^2 + x + 2](https://tex.z-dn.net/?f=1%20%5Ctimes%20%28x%5E2%20%2B%20x%20%2B%202%29%20%3D%20%20x%5E2%20%2B%20x%20%2B%202)
Add the results
![(x^4 + x^3 + 2x^2) + (3x^3 + 3x^2 + 6x) + ( x^2 + x + 2)](https://tex.z-dn.net/?f=%28x%5E4%20%2B%20x%5E3%20%2B%202x%5E2%29%20%2B%20%283x%5E3%20%2B%203x%5E2%20%2B%206x%29%20%2B%20%28%20x%5E2%20%2B%20x%20%2B%202%29)
Combine the like terms
![x^4 + 4x^3 + 6x^2 + 7x + 2](https://tex.z-dn.net/?f=x%5E4%20%2B%204x%5E3%20%2B%206x%5E2%20%2B%207x%20%2B%202)
The answer is written in descending powers of x.
Circumference = 2 * PI * radius
Circumference = 2 * 3.14159265 * 63
Circumference = 395.841
Hey there! I’m happy to help!
We see that the two equal sides are longer than the base. This means that our a will be larger than b. The problem says that one of the longer sides is 6.3. Since the two longer sides are equal, that means that both longer sides are 6.3 cm. Therefore, we can simply subtract these two from the perimeter to find the shorter side, which is the base.
15.7-6.3-6.3=3.1
Therefore, the length of the base is 3.1 cm.
I hope that this helps!
I think the answer is d hope this helps