Offline paper
Mathematics · 2017
JEE Main 2017 · 2017-04-02 Offline · Q64
If A= [2, -3; -4, 1], then adj (3 A^2+12 A) is equal to:
If $\displaystyle A=\left[\begin{array}{rr}2 & -3 \\ -4 & 1\end{array}\right]$, then $\displaystyle \operatorname{adj}\left(3 A^2+12 A\right)$ is equal to :
Official answer
(1)
$\displaystyle \left[\begin{array}{ll}51 & 63 \\ 84 & 72\end{array}\right]$
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JEE Main 2017 Mathematics question, with the answer from NTA’s final answer key. Where our answers come from.