Simplify ^4√81-8^3√216+15^5√32+√225
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(81)^1/4 - 8(216)^1/3 +15(32)^1/5 + (225)^1/2
= 3 - 8(6) + 15 (2) + 15
= 3 - 48 +30 +15
= 0
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