√(-3(18/11)) = √(-54/11) = √-54 / √11 = (i√54) / √11 = (i√(96)) / √11 = (3i√6) / √11 = 3i√(6/11) = 3i√(6/11)
√(-3(18/11)) = √(-54/11) = √-54 / √11 = (i√54) / √11 = (i√(96)) / √11 = (3i√6) / √11 = 3i√(6/11) = 3i√(6/11)