If anyone can answer this i will give 20 point simplify (5n4)−3. assume n=0

For this case we have the following expression:
 (5n ^ 4) ^ - 3
 Rewriting we have:
 1 / (5n ^ 4) ^ 3
 Then, for power properties:
 1 / (5 ^ 3n ^ (4 * 3))
 1 / (125n ^ 12)
 If n = 0 we have:
 1 / (125 (0) ^ 12) = infinity.
 
 The simplified expression is:
 1 / (125n ^ 12)
 For n = 0 the value of the expression is:
 infinity.