Write the word or phrase that best completes each statement or answers the question
-Using the matrix $L=\left[\begin{array}{ccc}1 & m & n \ p & q & r\end{array}\right]$, verify that $L+(-L)=O$.

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The Answer of Write the word or phrase that best completes each statement or answers the question
-Using the matrix $L=\left[\begin{array}{ccc}1 & m & n \ p & q & r\end{array}\right]$, verify that $L+(-L)=O$.

Write the Word or Phrase That Best Completes Each Statement L=[1mnpqr]L=\left[\begin{array}{ccc}1 & m & n \\ p & q & r\end{array}\right]L=[1p​mq​nr​]

Write the Word or Phrase That Best Completes Each Statement $L=\left[\begin{array}{ccc}1 & m & n \\ p & q & r\end{array}\right]$