(√15乘以√2-3√15)÷√5
=√30÷√5-3√15÷√5
=√6-3√3
(√3+√5)的平方-(π-3.14)的零次
=(√3+√5)²
=3+5+2√3√5
=8+2√15
(-3√2)÷(-4√2)乘以√6
=3/4x√6
=3√6/4
2的3/4乘以3的1/2)的四次
=(2x3/4)x(3x1/2)^4
=3/2x81/16
=243/32
3的√2乘以√18
=3x√2x3√2
=18