Question

(-1/4)³ - (-2/8) - (-2/5)² =
Ayuda

Answer 1

Hagámoslo por partes:
(-1/4)³ = -1³/4³ = -1/64
2/8 = 1/4
(-2/5)² = -2²/5² = 4/25

(-1/4)³ - (-2/8) - (-2/5)² = (-1/64) + (1/4) + (4/25) 
= (-25/1600) + (400/1600) + (256/1600)
= 631/1600

Answer 2

1/64+2/8=138/1792
138/1792+4/25=10568/44800
10568/44800=0.23