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Heya !!
1980 = 2 × 2 × 3 × 3 × 5 × 11
128 √1980 = 128 √2 × 2 × 3 ×3 × 5 × 11
=> 128 × 2 × 3 √5 × 11
=> 768 √55.
1980 = 2 × 2 × 3 × 3 × 5 × 11
128 √1980 = 128 √2 × 2 × 3 ×3 × 5 × 11
=> 128 × 2 × 3 √5 × 11
=> 768 √55.
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128root 1980 = 768root 55
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