+2448 I really don't know how to do these >.<
−3√−54n7
−54√128x4
64√567x4
43√64n8
+6252 −3√−54n7=−((−1)3√54n7=3√27n6⋅2n=3n23√2n
the rest are similar, give them another try
+6252 The idea is to factor the stuff under the radical into two pieces.
One piece is something that has a clear cube or 4th root and the other piece is the rest.
In the first one we want to break −54n7 into pieces one of which we can simply take the cube root of.
(−3n2)3=−27n6−54n7=−27n6⋅2n3√−54n7=3√−27n6⋅2n=−3n23√2n−3√−54n7=−(−3n23√2n)=3n23√2n
I'll do one more for you but I'd like to see you work these out yourself
−54√128x4=−54√27x4=−54√24x4⋅23=−5⋅2x4√23=−10x4√8
