a) √98 - √45000 = √49*2 - √900 * 25 * 2 = 7√2 + 150√2 = 157√2 b) 7∛10 - ∛80 = 7∛10 - ∛8*10=7∛10 - 2∛10 = 5∛10 c) √27 * √125 *√108 - 139√5 = 3√3 * 5√5 *6√3 - 139√5 = 15√15*6√3 - 139√5 = 90√45 - 139√5 = 270√5 - 139√5 = 131√5 2√32 + 3√18 - √72 = 8√2 + 9√2 - 6√2 = 11√2 4∛54 + ∛16 - ∛128 = 12∛2 + 2∛2 - 4∛2 = 10³√2 2∛24 + 4∛81- 14∛3 = 4∛3 + 12∛3 = 16³√3
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a) √98 - √45000 = √49*2 - √900 * 25 * 2 = 7√2 + 150√2 = 157√2
b) 7∛10 - ∛80 = 7∛10 - ∛8*10=7∛10 - 2∛10 = 5∛10
c) √27 * √125 *√108 - 139√5 = 3√3 * 5√5 *6√3 - 139√5 = 15√15*6√3 - 139√5 = 90√45 - 139√5 = 270√5 - 139√5 = 131√5
2√32 + 3√18 - √72 = 8√2 + 9√2 - 6√2 = 11√2
4∛54 + ∛16 - ∛128 = 12∛2 + 2∛2 - 4∛2 = 10³√2
2∛24 + 4∛81- 14∛3 = 4∛3 + 12∛3 = 16³√3