Respuesta :

12 - 10i - 14i
= 12 - 24i
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√100 - √-81
= 10 - 9i
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∛8 = 8^1/3
answer is
D. 8^1/3
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√54x^9y^7 = 3x^4y^3 √6xy
answer
B. 3x^4y^3 √6xy
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