Question

Rewrite without parentheses and simplify. (v+4)^2

Answer 1

$(v+4)^2 \\ \\ v^2 + 2v \times 4 + 4^2 \\ \\ v^2 + 2v \times 4 + 16 \\ \\ v^2 + 8v + 16 \\ \\ Answer: v^2 + 8v + 16$

Answer 2

You can say : ( v + 4 )( v + 4 ) = v ^2  + 4v + 4v + 4^2 = v^2 + 8v + 16 thats the answer :))
i hope this is helpful 
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