Question

6√12-7√3? Alguém sabe?

Answer 1

$6 \sqrt{12} -7 \sqrt{3} = \\ \\ 6 \sqrt{2^2.3} -7 \sqrt{3} = \\ \\ 6.2 \sqrt{3} -7 \sqrt{3} = \\ \\ 12 \sqrt{3} -7 \sqrt{3} = \\ \\ 5 \sqrt{3}$