Question

please help guys....fast​

Answer 1

$6 \sqrt{12} - 3 \sqrt{48} + 6 \sqrt{75} + 7 \sqrt{108} \\ 6 \sqrt{4 \times 3} - 3 \sqrt{4 \times 4 \times 3} + 6 \sqrt{5 \times 3 \times 5} + 7 \sqrt{4 \times 3 \times 9} \\ \\ 6 \times 2 \sqrt{3} - 3 \times 2 \times 2 \sqrt{3} + 6 \times 5 \sqrt{3} + 7 \times 2 \times 3 \sqrt{3} \\ 12 \sqrt{3} - 12 \sqrt{3} + 30 \sqrt{3} + 42 \sqrt{3} \\ \\ \sqrt{3} (12 - 12 + 30 + 42) \\ \\ 72 \sqrt{3} \\ \\ = 124.704$

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