解(1):原式=-3√(8/27)×√(4/3)
=-3×√(8/27×4/3)
=-3×√(32/81)
=-3×(4√2)/9
= -(4√2)/3
(2):原式=-√(11/5)÷√(45/11)
=-√(11/5÷45/11)
=-√(11/5×11/45)
=-√(121/225)
=-√(11/15)²
= -11/15
解(1):原式=-3√(8/27)×√(4/3)
=-3×√(8/27×4/3)
=-3×√(32/81)
=-3×(4√2)/9
= -(4√2)/3
(2):原式=-√(11/5)÷√(45/11)
=-√(11/5÷45/11)
=-√(11/5×11/45)
=-√(121/225)
=-√(11/15)²
= -11/15