What is the first step when rewriting y = -4x2 + 2x - 7 in the form y = a(x - h)2 +k?
1. 2 must be factored from 2x - 7
2. -4 must be factored from -4x2 + 2x
3. x must be factored from -4x2 + 2x
4. -4 must be factored from -4x2-7
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Answer: The answer is NOT 1 or 3
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