Respuesta :

Answer:

-1

Step-by-step explanation:

2−1+  (22−(−1)²) / (1−(2)(−1))

+2(2−(−1)) / (2)(−1)

22−(−1)2 / 1−(2)(−1)

+2(2−(−1)) / (2)(−1)

= -1

RELAXING NOICE
Relax