Question

4 squre root 5+5squre root5 is equal to
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Answer 1

Step-by-step explanation:

$4 \sqrt{5} + 5 \sqrt{5} \: \: is \: equal \: to \: 9 \sqrt{5}$

if the numbers in the roots are alike then you can directly add them.

if unlike then addition is not possible.

Mrk as brainlist :-)