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# Which function in vertex form is equivalent to f(x) = x2 + 8 – 16x? A. f(x) = (x – 8)2 – 56 B. f(x) = (x – 4)2 + 0 C. f(x) = (x + 8)2 – 72 D.f(x) = (x + 4)2 – 32

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Answer: The correct choice is A. Explanation:The given function is,Rewrite the above function.To make the perfect square we add and subtract the square of , where b is the coefficient of x and a is the coefficient .Since a=1 and b = -16, So let's add and subtract it square of -8.Using, therefore, the correct option is A.