The cube root of A is 27, and the cube root is equal to 3.

The cube root of b is -27 and the cube root is -3.

3 and -3 are anti-numbers, and we see that 27 and -27 are anti-numbers, so the conclusion holds.

2. According to the conclusion of the topic, the cube roots of (1-2x) and (3x-5) are inverse numbers, so 1-2x and 3x-5 are inverse numbers.

So 1-2x=-(3x-5)

1-2x+3x-5=0

x-4=0

x=4

Therefore, x = 1- under 1- under 4= 1-2=- 1.