Question

2-sqrt(1-x^2)>sqrt(4-x^2)

Answer 1

$sqrt{1-x^{2}}+sqrt{4-x^{2}}<2$

 

$2-sqrt{1-x}sqrt{x+1}>sqrt{2-x}sqrt{x+2}$ 

 

$-1leq x<- frac{15}{4}$ 

 

$frac{15}{4}<xleq 1<var>$

 

$x=1, x=-1$