`(x^(2))/(4)-2x+4`

If x in R and P=(x^(2))/(x^(4)-2x^(2)+4) , then P lies interval

If I_(1)=int_(0)^(2)(x^(2))/([x^(2)-4x+4]+[x^(2)])dx and I_(2)=int_(0)^(2)(4)/([x^(2)-4x]+[x^(2)-4])dx then I_(1)-I_(2)=

If x=-2 and y=1, by using an identity find the value: ((2)/(x)-(x)/(2))((4)/(x^(2))+(x^(2))/(4)+1)])

For real x, the greatest value of (x^(2)+2x+4)/(2x^(2)+4x+9) is

Simplify : (2x^(4)-4x^(2)+1)(2x^(4)-4x^(2)-1)

(x^(2)+4x)^(2)-5(x^(2)+4x)-y(x^(2)+4x)+5y