What is f of x is equal to 2 x squared plus 28 x minus 5 written in vertex form?
A
f of x is equal to 2 times open paren x plus 14 close paren squared minus 98B
f of x is equal to 2 times open paren x plus 7 close paren squared minus 103C
f of x is equal to 2 times open paren x plus 14 close paren squared minus 14D
f of x is equal to 2 times open paren x plus 7 close paren squared minus 19