Respuesta :

Answer

(15*15*15)-(10*10*10)-(5*5*5)

=3375-1000-125

=2250

Another method


Answer:

15^3=3375

10^3=1000

5^3=125

15 3-10 3-5^3

3375-1000-125

3375-1125

2250

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(-1)(i)+1-1(i)+[(-1)(i)-1]
-i+1-i-i-1
=3i