`5pq+10pr+2r^(2)+qr`

if p,q,r be real then the interval in which f(x) =|underset(pr" "qr" "x+r^(2))underset(pq" "x+q^(2)" "qr)(x+p^(2)" "pq" "pr)|,

Find the product of the following. (p^2+4q^2+r^2+2pq+pr-2qr) (p-2q-r)

Simplify (pq - qr) ^(2) + 4 pq ^(2) r

If q is the mean proportional between p and r , show that : pqr (p + q + r)^(3) = (pq + qr + pr)^(3) .

Find the value of the expressions, when p= -3, q= -1" and "r= 2 4pq^(2)+7qr-6pr

Factorise the following : p^2q - pr^2 - pq + r^2 .

Factorise: p^(2)q-pr^(2)-pq+r^(2)

Simplify the following:(pq-qr+ pr) (pq+qr)-(pr+pq) (p+q-r).

If p, q, r be real then the intervals in which, f(x)=|(x+q^(2),pq,pr),(pq,x+p^(2),qr),(pr,qr,x+r^(2))|

Solve the any one of following sub questions: In Delta PQR, "seg" PM "is a median" PM = 10 and PQ^(2) + PR^(2) = 328 "then find" QR