Question

$\sqrt{30} + \sqrt{21 } \div \sqrt{30} - \sqrt{21}$
Please note: above equation are under one more bigger root sign. Please tell.. ​

Answer 1

Answer:

11.2444

Step-by-step explanation:

(sqrt 30 + sqrt 21 )/ (sqrt 30 - sqrt 21) * (sqrt 30 + sqrt 21)/=(sqrt 30 + sqrt 21)

=(30+ 2 sqrt 630 +21)/9

=(51+6 sqrt 70)/ 9

=3 (17 + 2 sqrt 70) / 9

=(17+2 sqrt 70 )/3