(3) Original formula = radical number (3*6)-2 radical number (3* 15)-3 radical number 2

=3 2-6 5-3 2

Root number 5 of =-6

(4) The original formula = the square root of 3-the square root of 24+the square root of 7.

=-the square root of 6 in 50 3.

2. Solution:

(1) Original formula = cube root symbol -2

(2) Original formula =0.8

(3) The original formula =-2.5

④ Original formula = 1000

3 solutions

(1) Ping: plus or minus 0.2.

Calculation: 0.2

(2) Ping: plus or minus 0. 1875.

Calculation: 0. 1875

(3) Ping: positive and negative root sign 7

Count: root number 7

(4) Ping: plus or minus 0.000 1.

Calculate 0.000 1

Be sure to adopt it. If you hit by hand, you'd better get extra points ... (* _ _ *)

joke