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2√(27) + √(12) -3√(3) -2√(12)
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2√(27) + √(12) -3√(3) -2√(12)

User Alfwatt
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2√(27) +√(12) -3√(3) -2 √(12)\\\\=2√(27)-3\sqrt 3-√(12)\\\\=2√(9 * 3) - 3 \sqrt 3 - √(4 * 3)\\\\=2\cdot 3\sqrt 3 -3 \sqrt 3 -2\sqrt 3\\\\=6\sqrt 3 -3\sqrt 3 -2\sqrt 3 \\\\=6\sqrt 3 - 5 \sqrt 3\\\\=\sqrt 3

User Salix
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