Simplify -8 seventh root of 384b^8

Math
-8384b87
Rewrite 384b8 as (2b)7⋅(3b).
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Factor 128 out of 384.
-8128(3)b87
Rewrite 128 as 27.
-827⋅3b87
Factor out b7.
-827⋅3(b7b)7
Move 3.
-827b7⋅3b7
Rewrite 27b7 as (2b)7.
-8(2b)7⋅3b7
Add parentheses.
-8(2b)7⋅(3b)7
-8(2b)7⋅(3b)7
Pull terms out from under the radical.
-8(2b3b7)
Multiply 2 by -8.
-16b3b7
Simplify -8 seventh root of 384b^8

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