If f(x) = x ^ 2 + 3 , then f(x+y)=?
1 answer:
Answer:
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
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1. $10.56
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