[(1/4)⁴×(-1/4)³]²×(-2)²⁴=
=[-(1/4)⁴×(1/4)³]²×2²⁴=
=[-(1/4)⁷]²×2²⁴=
=(-1/4)¹⁴×2²⁴=
=(1/4)¹⁴×2²⁴=
=1/4¹⁴×2²⁴=
=1/(2²)¹⁴×2²⁴=
=1/2²⁸×2²⁴=
=2²⁴/2²⁸=
=2⁻⁴=
=1/2⁴=1/16
