计算或化简:(1)√12×√18×√27 (2)√(-3)²×16×25 (3)√0.16×0.25×400

问题描述:

计算或化简:(1)√12×√18×√27 (2)√(-3)²×16×25 (3)√0.16×0.25×400

(1)√12×√18×√27
=2√3×3√2×3√3
=54√2
(2)√(-3)²×16×25
=√3²×4²×5²
=3×4×5
=60
(3)√0.16×0.25×400
=√0.4²×0.5²×20²
=0.4×0.5×20
=4