Evaluate the radical function at the given value of the variable.
-$f ( x ) = \sqrt { x ^ { 2 } + 2 x + 1 } ;$ find $f ( 4 )$
A) 3
B) 5
C) 2
D) 4

Name: Evaluate the radical function at the given value of the variable. -$f ( x ) = \sqrt { x ^ { 2 } + 2 x + 1 } ;$ find $f ( 4 )$ A) 3 B) 5 C) 2 D) 4
Brand: Quizplus
Rating: 5.0 (32 reviews)

Question

Quizplus · Accepted Answer

Substitute x=4 into f(x) and simplify:
$f(4) = \sqrt{4^2 + 2\cdot4 + 1}= \sqrt{25}=5$
Therefore, the answer is choice B, 5.

Evaluate the Radical Function at the Given Value of the Variable