the first question get marked as brainist
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Answer:
7 + 13 + 2root10 - 2root40
= 20 - 2root10
= 13.6754446797
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hey mate ◉‿◉
(√5 + √2) ^2 + (√8 - √5) ^2
=> 5 + 2 + 2•√10 + 8 + 5 - 2•√40
=> 20 + 2√10 - 4√10
=> 20 - 2√10
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