Question

Q28.Rationalise the denominator and find the value of a and b.
5+√3/7-4√3=47a+√3b​

Answer 1

Step-by-step explanation:

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Answer 2

Answer: given below

Step-by-step explanation:

5+√3/7-4√3 = 47a+√3b

5+3/7-4√3 = 5+3/7-4√3 * 7+4√3/7+4√3 ​= (5+√3)(7+4√3)/(7)^2 - (4√3)^2                    = 35+20√3+7√3+12/49-48 = 35=20√3+7√3+12 =  47+27√3

= 5+√3/7-4√3 = 47a+√3b

= 47+27√3 = 47a+√3b

a=1 and b=27

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