Question

.........Solve this question.......
√45 -3√20 + 4√5
​

Answer 1

Answer:

$\sqrt{45} - 3 \sqrt{20} + 4 \sqrt{5} \\ = \sqrt{9 \times 5} - 3 \sqrt{4 \times 5} + 4 \sqrt{5} \\ = 3 \sqrt{5} - 6 \sqrt{5} + 4 \sqrt{5 } \\ = \sqrt{5}$

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Answer 2

Step-by-step explanation:

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