Question

Root 5 plus 2 root 3 by 7 plus 4 root 3 equal to a minas b root3

Answer 1

Answer:

question is wrong that should be 5 not √5

of there is 5 then answer is A=9 and B=6

by rationalising

(5+2√3)(7-4√3)=a - b√3

35+14√3-20√3+8×3

=9-6√3=a-b√3

therefore A=9 and B=6