Question

(7 + sqrt(5))/(7 - sqrt(5)) = a + b * sqrt(5). find a and b ​

Answer 1

We have,

7−57+5−7+57−5=a+b5

(7+5)(7−5)(7+5)2−(7−5)2=a+b5

a+b5=(49−5)(49+5+145)−(49+5−145)

a+b5=44285

a+b5

Answer 2

Answer:

We have,

7-57+5-7+57-5=a+b5

(7+5)(7-5)(7+5)2-(7-5)2=a+b5

a+b5=(49-5)(49+5+145)-(49+5-145)

a+b5-44285

a+b5

hope this helps ❤️