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Please solve this question it is of 9 class and of number system and exponents

Answer» HEY there your ANSWER is
=5+3√3/7+4√3×7-4√3/7-4√3
=(5+3√3)+(7-4√3)/49-48
=5(7-4√3)+3√3(7-4√3)/1
=35-20√3+21√3-12√3
=35-11√3

so a= 35
b=-11




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