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\sqrt{y}+3\sqrt{x}\left(2\sqrt{y}\right)-\sqrt{xy}

User Spikey
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\bf √(y)+3√(x)(2√(y))-√(xy)\implies √(y)+(3\cdot 2)√(x\cdot y)-√(xy) \\\\\\ √(y)+6√(xy)-√(xy)\implies \stackrel{\textit{adding like-terms}}{√(y)+5√(xy)}

User Nikk
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