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

30-06-2014

[tex]\sqrt{28}+8\sqrt7=\\ 2\sqrt7+8\sqrt7=\\ 10\sqrt7[/tex]

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