Question

M,n,t are in a.p then prove that (m+2n-t)(2n+t-m)(t+m-n)=4mnt

Answer 1

2n=m+t (A.P)
lhs
(m+m+t-t)(m+t+t-m)(2n-n)
2m*2t*n
4mt=rhs proved
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