Answer:
1. 0.064
2. 1
3. 1
4. 9^2 or 3^4
Explanation:
1. 0.4^3 means to do 0.4 times itself 3 times
2 and 3. Anything to the power of 0 equals 1
4. 9x9 - 9^2
3x3x3x3 - 3^4
Not a 100% sure but the first one is 0.064
The Second is 1
Third is also 1
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