Question

please answer in brief​

Answer 1

Step-by-step explanation:

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=3(3√5)-5√5+10√2-5√2

=9√5-5√5+10√2-5√2

=4√5+5√2

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Answer 2

Answer:

$4 \sqrt{5 } +5 \sqrt{2}$

Step-by-step explanation:

This the full solution

$3 \sqrt{3 \times 3 \times 5} - \sqrt{5 \times 5 \times 5} + \sqrt{10 \times 10 \times 2} - \sqrt{5 \times 5 \times 2}$

$9 \sqrt{5} - 5 \sqrt{5} + 10 \sqrt{2} - 5 \sqrt{2}$

$4 \sqrt{5} + 5 \sqrt{2}$