Question

(4n + 4 )^2-16

Answer 1

\((4n + 4 )^2-16\)

\(=> ( 4n + 4)^2-4^2\)

\(=> (4n+4-4).(4n+4+4)\)

\(= 4n(4n+8)\)

\(= 4n.4(n+2)\)

Answer 2

\(\left(4n+4\right)^2-16\)

\(\Leftrightarrow16n^2+32n+16-16\)

\(\Leftrightarrow16n^2+32n\)

\(\Leftrightarrow16n\left(n+2\right)\)

Answer 3

n=-2 hoặc=2