Respuesta :

apologiabiology
so factor -27
-27=-1 times 3 times 3 times 3
∛(-1 times 3 times 3 times 3)=3 times ∛-1
remember that ∛-1=-1
2 times ∛-1=3 times -1=-3
now we have
5 times (-3)+18
5 times -3=-15
-15+18=3
answer is 3
JoshuaCho
You cannot have a negetive number inside a cube root. So we use an "i" instead.

This is how you do it:
[tex]5 \sqrt[3]{-27} + 18[/tex]                   [tex] \sqrt[3]{-27} [/tex] becomes [tex]3i[/tex]
[tex]5(3i) + 18[/tex]                       multiply
[tex]15i + 18[/tex]                         reduce
[tex]3(5i + 6)[/tex]


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