Question

rationalize find a and b.
5+2√3/7+4√3=a+b√3


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Answer 1

real question is

5+2√3/7+4√3=a-b√3

then

5+2√3 × 7-4√3 =a-b√3

7+4√3 7-4√3

= 35-6√3-24 = a-b√3

49-48

= 11 - 6√3 = a-b√3

A= 11 ,B = -b√3 = -6√3

= b = -6

ACCORDING rationalize find a and b.

rationalize find a and b.5+2√3/7+4√3=a+b√3

2√3 × 7-4√3 =a+b√3

b√37+4√3 7-4√3

7-4√3

7-4√3 = 35-6√3-24 = a+b√3

b√3 49-48

b√3 49-48

b√3 49-48 = 11 - 6√3 = a+b√3

b√3 A= 11 ,B = +b√3 = -6√3

b√3 = -6√3 = b = -6

then it is wrong because +b√3 then value come +6 not -6

so check question ☝

Answer 2

$\large\sf{\red{Answer:-}}$

Hence, by comparing a = 11 & b = -6.