Question

i want genuine answer​

Answer 1

Answer:

x= a+√a^2-1

x-a= √a^2-1

squaring on both sides

(x-a)^2= a^2-1

x^2+a^2-2xa=a^2-1

x^2-2xa=-1

x^2+1=2xa

x^2+1/2x = a

therefore a= x^2+1 ÷2x

thnk u..