求解呀!!

2024-12-27 07:57:48
推荐回答(2个)
回答1:

=1.2-0.5*【-(-25-100)的开立方)+【(-125/64)开立方】
=1.2-0.5*[5+(-5/4)]
=1.2-0.5*15/4
=-0.675

回答2:

原式=1.2-0.5×[-³√(-125)+³√(-125/64)]
=1.2-0.5×(5-5/4)
=1.2-0.5×3.75
=1.2-1.875
=0.675