smithbryan106 smithbryan106
  • 30-06-2014
  • Mathematics
Answered

Which choice is equivalent to the expression below?
√28+8√7

A.8√35
B.12√7
C.10V7
D.9V35



Answer :

Аноним Аноним
  • 30-06-2014
[tex]\sqrt{28}+8\sqrt7=\sqrt{4\cdot7}+8\sqrt7=\sqrt4\cdot\sqrt7+8\sqrt7=2\sqrt7+8\sqrt7=10\sqrt7\\\\Answer:C.[/tex]
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konrad509
konrad509 konrad509
  • 30-06-2014
[tex]\sqrt{28}+8\sqrt7=\\ 2\sqrt7+8\sqrt7=\\ 10\sqrt7[/tex]
Answer Link

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