A) m - 1
B) m + 1
C) 2m + 1
D) 2m ? l
E) None of these
Correct Answer: A
Solution :
Explanation Option [a] is correct \[4-3m+{{m}^{2}}\overset{5m+2}{\overline{\left){\begin{align} & 5{{m}^{3}}-13{{m}^{2}}+15m+7 \\ & \underline{\pm 5{{m}^{3}}\mp 15{{m}^{2}}\pm 20m} \\ & \,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,2{{m}^{2}}-5m+7 \\ & \,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\underline{\pm 2{{m}^{2}}\mp 6m\pm 8} \\ & \,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,m-1\,\, \\ \end{align}}\right.}}\]You need to login to perform this action.
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