Evaluate (x+4)²

We have to evaluate (x+4)^2

Solution

(x+4)² can be simplified using the identity (a+b)2

(a+b)2= a2 + 2ab +b²

Here a=x and b=4

(x+4)2= x2 + 2 (x) (4) + 42

(x+4)²= x² + 8 x + 16