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To evaluate the expression, substitute the given values for each variable:
a = 2, b = 3, c = 8
a^5 = 2^5 = 32
4a = 4 * 2 = 8
Now calculate the expression:
a^5 - bc + 4a ÷ c = 32 - (3 * 8) + (8 ÷ 8)
= 32 - 24 + 1
= 9
Therefore, when a = 2, b = 3, and c = 8, the value of the expression is 9.