Question

if f(x)= x^2 + 3x + 5 what is f(a + h)?
A. a^2 +2ah + h^2 +3a +3h+5
B. (x^2+3ax+5)(a+h)
C.h^2+3a+3h+5
D.(a+h)^2+3(a+h)+5(a+h)

Answer 1

A

Answer 2

could you explain how you got that ?

Answer 3

pleaase :)

Answer 4

pleaase :)

Answer 5

A

Answer 6

kassia, did you see the change to your last question? jkip made me realize I overlooked the square root.

Answer 7

For this problem, you just need to substitute (a+h) in for x.

So you have
\[f(a+h) = (a+h)^{2}+3(a+h)+5\]

Answer 8

wherever you see an "x" ; replace it with (a+h) and expand it all out to see what groups together

Answer 9

thanks!