Kylie explained that (negative 4 x + 9) squared will result in a difference of squares because (negative 4 x + 9) squared = (negative 4 x) squared + (9) squared = 16 x squared + 81. Which statement best describes Kylie’s explanation?

Respuesta :

Answer:

Kyle did not solve the question correctly

Step-by-step explanation:

The equation (-4x +9)^2 is a perfect square trinomial.

A typical example of a perfect square trinomial is (x +y) ^2 = x^2 + 2xy + y^2

Therefore, (-4x + 9)

= (-4x)^2 + 2(-4x)(9) + (9)^2

= 16x^2 + 2(-36x) + 81

= 16x^2 - 72x +81

The result Kyle gave was 16x^2 + 81. This is incorrect.

Therefore, Kyle did not solve the question correctly

Answer:

C. Kylie did not understand that this is a perfect square trinomial, and she did not determine the product correctly.

just passed on edge-nuity

Step-by-step explanation: