Which two of the following can be factorised withintegral coefficients ? I `x^4+x^2 + 1` II `x^4+2x+2` III `x^4-2x^2+1` IV `x^4=x+1`

Find the coefficient of x^(2) in (2x + 1/(2x))^(4)

Which of the following algebraic expressions are polynomials? I. x^(3) + sqrt(3x) + 4 , II. x^(2) + 2sqrt(x) + 4 III. x^(2) + sqrt(x-1) , IV. x^(2) + 3x + 4

The coefficient of x^4 in ((1+x)/(1-x))^2,|x|<1 , is

Factorise x^(4) + x^(2) + 1 .

What is the coefficient of x^(4) in the expansion of (1+2x+3x^(2)+4x^(3)+….)^(1//2) ?

Factorise : x^(4) + x^(2) +1

Which of the following are quadratic equations? (i) (x+1/x)^2=3(x+1/x)+4 (ii) (2x+1)(3x+2)=6(x-1)(x-2) (iii) x+1/x=x^2,\ \ x!=0