which expression is equivalent to 2√28+2√63

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21-11-2018
Mathematics

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which expression is equivalent to 2√28+2√63

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gmany gmany · Answer 1 · 2018-11-26T18:08:38+01:00

gmany gmany

26-11-2018

[tex]2\sqrt{28}+2\sqrt{63}=2\sqrt{4\cdot7}+2\sqrt{9\cdot7}=2\sqrt4\cdot\sqrt7+2\sqrt9\cdot\sqrt7\\\\=2(2)\sqrt7+2(3)\sqrt7=4\sqrt7+6\sqrt7=\boxed{10\sqrt7}[/tex]

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