If f(x)=x^2+3, then f(x+y)=?

https://www3.nd.edu/~apilking/Math10550/Work/OLd%20Exams/Exam1F08Soluutions.pdf

Step-by-step explanation: A whole worksheet is in that link

This function tells us that for any input x, the output will be x2−3x+1. Now what if we input x−2 into the machine? Our output would be (x−2)2−3(x−2)+1. Every x in the function corresponds to the input value. Therefore we can write our function like this:

f(input)=(input)2−3(input)+1

Our input is x−2, therefore:

f(x−2)=(x−2)2−3(x−2)+1

Step-by-step explanation: