• # question_answer After simplification. Find the value of the following algebraic expression at m = -3, n = 2 and r = -1. $\mathbf{3}\left( {{\mathbf{m}}^{\mathbf{2}}}\mathbf{+}{{\mathbf{n}}^{\mathbf{2}}}\mathbf{-3 mnr+}{{\mathbf{r}}^{\mathbf{2}}} \right)\mathbf{-[5}\left( \mathbf{2}{{\mathbf{m}}^{\mathbf{2}}}\mathbf{+}{{\mathbf{n}}^{\mathbf{2}}}\mathbf{-2mn} \right)\mathbf{-\{-}$ ${{\mathbf{r}}^{\mathbf{3}}}+\mathbf{3}\left( \mathbf{m}-\mathbf{2} \right)\text{ }+\text{ }\mathbf{8m}{{\mathbf{n}}^{\mathbf{2}}}\}]$ A) 638  B)  -732C) -638     D)  732E)              None of these

Correct Answer: B

You need to login to perform this action.
You will be redirected in 3 sec