Mariah converted the following equation into standard form.25x2 + 25y2 – 200x + 100y + 4 = 025x2 – 200x + 25y2 + 100y = –425(x2 – 8x) + 25(y2 + 4y) = –425(x2 – 8x + 16) + 25(y2 + 4y + 4) = –4 + 16 + 425(x – 4)2 + 25(y + 2)2 = 16
A
Mariah did not make an error.B
Mariah listed the center incorrectly. The center should be (–4, 2).C
Mariah should have added 400 and 100 to the right side of the equation in step 4D
Mariah factored incorrectly in step 5. She should have factored to (x – 8)2 and (y + 4)2.