Question

X= [(-1)³ -(-1)elevada 5 .(-1)elevada 4]+ (-1)elevada 7 

Y= (-2) elevada a 4 :2³ -4² : (-2)²

Answer 1

Resolvendo...
A)
X= [(-1)³ -(-1)elevada 5 .(-1)elevada 4]+ (-1)elevada 7
X =  [ -1 + 1 * 1] - 1
X = 0 -1
X = -1

B)
Y= (-2) elevada a 4 :2³ -4² : (-2)²
Y = 16 : 8 - 16 : 4
Y = 2 - 4
Y = -2