Question

( frac{sqrt{a+x}+sqrt{a-x}}{sqrt{a+2}-sqrt{a-x}} quad a=frac{2 a b}{1+b^{2}} )
( frac{sqrt{a+x}+sqrt{a-x}}{sqrt{a+x}-sqrt{a-x}} frac{x sqrt{a+x}+sqrt{a+x}}{sqrt{a+x}+sqrt{a-x}} )
( frac{(sqrt{a+x}+sqrt{a-x})^{2}}{a+x-b+x}=frac{(a+x)+a-x+2 sqrt{a^{2}-x^{2}}}{2 x} )
( frac{x(a+sqrt{a^{2}-x^{2}})}{2 x}=frac{a+sqrt{a^{2}-frac{4 a^{2} b^{2}}{left(1+b^{2}right)^{2}}}}{frac{aleft(1+b^{2}right)+sqrt{a^{2}left(1+b^{2}right)^{2}-4 a^{2} b^{2}}}{2 a b}} )
( frac{2 a}{2 a b}=frac{1}{b} )

# 57 Simplify sa ti + va-x, Find the ualue vatn - Va-x where 2 ab 1+62

Solution