Question

пожааалуйста,срочно,номер 184

Answer 1

x^2 +2+ 1/x^2= (x+1/x)^2
x^2/y^2-2+y^2/x^2= (x/y-y/x)^2
a^2/b^2-2a+b^2=(a/b-b)^2
1/4a^2+2+4b^2/a^2= (1/2a+2b/a)^2
1/4x^2+1+x^2= (1/2x+x)^2
9x^2/4y^2-1/y+1/9x^2=(3x/2y-1/3x)^2