What is the first step when rewriting y = –4x2 + 2x – 7 in the form y = a(x – h)2 + k? 2 must be factored from 2x – 7 –4 must be factored from –4x2 + 2x x must be factored from –4x2 + 2x –4 must be factored from –4x2 – 7