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

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2√(28)+2√(63)=2√(4\cdot7)+2√(9\cdot7)=2\sqrt4\cdot\sqrt7+2\sqrt9\cdot\sqrt7\\\\=2(2)\sqrt7+2(3)\sqrt7=4\sqrt7+6\sqrt7=\boxed{10\sqrt7}

User Taylor Krusen
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