Rewrite the quadratic function in standard form by completing the square.f(x) = x2 + 6x - 4
A. f(x) = (x + 3)2 - 13
B. f(x) = (x + 3)2 + 13
C. f(x) = (x + 6)2 + 40
D. f(x) = (x + 6)2 - 40
Answer: A
Mathematics
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A. - 
B. 
C. 
D. - 
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