Simplify (2x−2y^3 3xy−4)^4. Write your answer using only positive exponents. Evaluate any numerical powers.

1. 3. can also be expressed as (22/7)

2. -4.5

3. 3.6

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a mantle plume is an upwelling of abnormally hot rock within the earth's mantle. as the heads of mantle plumes can partly melt when they reach shallow depths, they are thought to be the cause of volcanic centers known as hotspots and probably also to have caused flood basalts.

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