Kylie explained that (- 4x +9)2 will result in a difference of squares because (-4x + 9)2 -(-4x)2 + (9)2 = 16x? +81. Which statement
best describes Kylie's explanation?
O Kylie is correct
O Kylie correctly understood that it is a difference of squares, but she did not determine the product correctly
O Kylie did not understand that this is a perfect square trinomial, and she did not determine the product correctly.
O Kylie determined the product correctly, but she did not understand that this is a perfect square trinomial.