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LekaFEV [45]
3 years ago
15

Simplify 4 radical 20- 3 radical 45

Mathematics
1 answer:
liberstina [14]3 years ago
8 0
4\sqrt{20}-3\sqrt{45}= 4*2\sqrt{5}-3*3\sqrt{5}= \\\\ =8\sqrt{5}-9\sqrt{5}= \\\\ =\boxed{-\sqrt{5}}
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