(√320-3∛24)-(√45-2∛81)=
(√(64*5)-3∛(3*8))-(√(9*5)-2∛(27*3))=
8√5-6∛3-3√5+6∛3=5√5;
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(√320-3∛24)-(√45-2∛81)=
(√(64*5)-3∛(3*8))-(√(9*5)-2∛(27*3))=
8√5-6∛3-3√5+6∛3=5√5;