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Delicious77 [7]
3 years ago
10

PLEASE HELP AND EXPLAIN HOW TO DO IT IM CONFUSED

Mathematics
1 answer:
Snezhnost [94]3 years ago
5 0

3\sqrt5-2\sqrt7+\sqrt{45}-\sqrt{28}=\\3\sqrt5-2\sqrt7+\sqrt{9\cdot5}-\sqrt{4\cdot7}=\\3\sqrt5-2\sqrt7+3\sqrt{5}-2\sqrt{7}=\\6\sqrt5-4\sqrt7

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