Question

(root11+root7)+(3root11+9root7)​

Answer 1

Answer:

4root11 + 10root7

Step-by-step explanation:

Hope this helps bro

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Answer 2

Answer:

$4 \sqrt{11 } + 10 \sqrt{7 }$

when we add both

$(\sqrt{11} + \sqrt{7} ) \: +( 3 \sqrt{11} + 9 \sqrt{7} )$

$4 \sqrt{11} + 10 \sqrt{7}$

Hope it will help you