Respuesta :

Answer:

15 x^ 4 y^ 11  +  64 x ^2 y^ 4

Step-by-step explanation:

The. Correct answer is :
15x4y11+64x2y4

(42x2y11) - (27x4y11) + 64x2y4

42x4y11 - 27x4y11 + 64x2 y4

= 15x4y11 + 64x2y4