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

If x is real then the value of the expression (2x^2+4x+1)/(x^2+4x+2) is A. only +ve number B. only -ve number C. any number D. only1

If P= (x^4-8x)/(x^3-x^2-2x), Q= (x^2+2x+1)/(x^2-4x-5) and R=(2x^2+4x+8)/(x-5) , then (PxxQ) div R is equal to: यदि P= (x^4-8x)/(x^3-x^2-2x), Q= (x^2+2x+1)/(x^2-4x-5) तथा R=(2x^2+4x+8)/(x-5) है, तो (PxxQ) div R का मान किसके बराबर है ?

2x^2(x^3-x)-3x(x^4+2x)-2(x^2-3x^4)

If f(x)=(x^(2)-2x+4)/(x^(2)+2x+4),x in R then range of function is

If f(x)=(x^(2)-2x+4)/(x^(2)+2x+4)x in R then range of function is

Find the range of the following functions: (where {.} and [.] represent fractional part and greatest integer part functions respectively) f(x)=(x^(2)-2x+4)/(x^(2)+2x+4)

If for x in R, (1)/(3) lt (x^(2) - 2x + 4)/(x^(2) + 2x + 4) lt 3 , then (9.3^(2x) + 6.3^(x) + 4)/(9.3^(2x) - 6.3^(x) + 4) lies between