Evalulate-√(13+4√10) - √(7-2√10)[there is a root on the whole equation 1)13+4√10 and 2)7-2√10]

Evalulate-√(13+4√10) - √(7-2√10)[there is a root on the whole

1.	Evalulate-√(13+4√10) - √(7-2√10)[there is a root on the whole equation 1)13+4√10 and 2)7-2√10]
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