Answer:
Radius is 2.
2πr= 4π
r=4π/2π
r=2
f(x)=x^2+3
f(x+y)=(x+y)^2+3
this is done by replacing x with (x+y)
f(x+y)=x^2+2xy+y^2+3
therefore : f(x+y)= x^2+y^2+2xy+3
5.3624785e+55
Step-by-step explanation:
-49.518
This should suffice.
(-8x-x) 7+x I believe that's the answer
