Question

simplify
plz answer fast ​

Answer 1

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refer the attachment for the answer .

Answer 2

= (5+√3) (7+4√3) - (5+√3)(7-4√3) / 7² -(4√3)²

= (35 + 20√3+7√3+12)-(35-20√3+7√3-12)/49-48

= (47 + 27 √3 ) - ( 23 - 3 √3)

= 24+40√3