5·cubed squreroot -27+18
so factor -27-27=-1 times 3 times 3 times 3∛(-1 times 3 times 3 times 3)=3 times ∛-1remember that ∛-1=-12 times ∛-1=3 times -1=-3now we have5 times (-3)+185 times -3=-15-15+18=3answer is 3