The distance between the points (m,-n) and (-m,n) is
(A) `sqrt(m^2 + n^2)`
(B) m+n
(C) 2`sqrt(m^2+n^2)`
(D) `sqrt(2m^2 +2n^2)`

If tantheta+sintheta=m and tantheta-sintheta=n , then the value of m^2-n^2 is equal to (a)4 mn (b) 2sqrt(mn) (c) 4sqrt(mn) (d) 2sqrt(m//n)

sqrt(m^(2)n^(2))times root(6)(m^(2)n^(2))times root(3)(m^(2)n^(2))

If m = 9 and n = (1)/(3)m , then sqrt((m)^(2) - (n)^(2) = ?)

If (m+n)/(m-n)=7/3 then (m^2-n^2)/(m^2+n^2)=

(m^(2)-n^(2))^(2)+2m^(2)n^(2)

The value of (m+n)^2+(m-n)^2 is

Factories: m^(4) + 2m^(2) n ^(2) +n ^(4)

If the coefficients of mth, (m+1) the and (m+2)th terms in the expansion (1+x)^n are in A.P., then (A) n^2+n(4m+1)+4m^2+2=0 (B) (n+2m)^2=n+2 (C) (n-2m)^2=n+2 (D) n^2+4(4m+1)+nm^2-2=0