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Seeking answers in eighth grade mathematics (writing process)
0.4 * 3.6 under the root sign (1) =1.44. Under the root sign 1.44= 1.2.

(2) 8/3 * 40 = (515) * 5= 1/3.

(3) 27 = 3 root number * 3 root number, 50=5 root number * 2.

(3* 3 under the root number) times (5 * 2 under the root number) = 65438+05 * 6 under the root number.

15* 6 under the radical sign divided by 6 = 15 under the radical sign.