Simplify
3√20 -3√80-2√45
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Answer:
-12√5
Step-by-step explanation:
3√20-3√80-2√45
=3√4×5-3√4×4×5-2√9×5
=3×2√5-3×4√5-2×3√5
=6√5-12√5-6√5
=6-12-6√5
=-12√5
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