(-5/8)×(-4)²-0.25×(-5)×(-4)³=-5/8×16-5/4×64=-10-80=-90
(-5/8)×(-4)²-0.25×(-5)×(-4)³=-5/8×16-0.25×64×5=-10-80=-90
(-5/8)×(-4)²-0.25×(-5)×(-4)³=(-5/8)×16-0.25×(-5)×(-64)=-10+16×(-5)=-10-80=-90
-90
