text: ## Algebra: A Combined Approach (4th Edition)
  
  $7\sqrt {7}-4\sqrt[3] x$
  $3\sqrt {7}-\sqrt[3] {x}+4\sqrt {7}-3\sqrt[3] x$ $(3+4)\sqrt {7}-(1+3)\sqrt[3] x$ Combine like radicals. $7\sqrt {7}-4\sqrt[3] x$
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