Question:If `sqrt 15` = 3.8727, find the value of `((sqrt(5) + sqrt(3))/(sqrt(5) - sqrt(3)))` 

Answer =`((sqrt(5) + sqrt(3))/(sqrt(5) - sqrt(3)))`

=`((sqrt(5) + sqrt(3)))/((sqrt(5) - sqrt(3))) x ((sqrt(5) + sqrt(3)))/((sqrt(5) + sqrt(3)))`

=`((sqrt(5) + sqrt(3))^2)/(5-3)`

=`(5 + 3 +2 sqrt(5) xx sqrt(3))/2`

=`(8 + 2sqrt(15))/2`

=`(4 + sqrt(15))`

=(4 + 3.8729)

=7.8729 

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Md. Saydul Alam

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