Question

计算：①(√15乘以√2-3√15)÷√5 ②(√3+√5)的平方-(π-3.14)的零次 ③(-3√2)÷(-4√2)

Answer 1

(√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