`|(x,p,q),(p,x,q),(p,q,x)| =`

If p(x) ,q(x) and r(x) and three polynomials of degree 2, then |{:(p(x),q(x),r(x)),(p'(x),q'(x),r'(x)),(p''(x),q''(x),r''(x)):}| is ………….of x .

If p and q are distinct reals,then 2{(x-p)(x-q)+(p-x)(p-q)+(q-x)(q-p)}=(p-q)^(2)+(x-p)^(2)+(x-q)^(2) is satisfied by no value of x(B) exactly one value of x(C) exactly two value of x(D) infinite values of x

If f(x)=(q(x-p))/(q-p)+(p(x-q))/(p-q),....pneq, find: f(p)+f(q).

The lines (p-q)x+(q-r)y+(r-p)=0(q-r)x+(r-p)y+(p-q)=0,(x-p)x+(p-q)y+(q-r)=

In the equation (x-p)/(q)+(x-q)/(p)=(q)/(x-p)+(p)/(x-q),x is not equal to

If x=(p+q)/(p-q) and y=(p-q)/(p+q) then the value of (x-y)/(x+y) is

If (x,2p+q)=(y,p+2q) then p-q=_______