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Back to Add, subtract, and multiply matrices — Problem 2 · Task Set 23

Exercises: Add, Subtract, and Multiply Matrices

Work through each section in order. Show your work where indicated.

Grade 9·20 problems·~35 min·Common Core Math - HS Number and Quantity·standard·hsn-vm-c-8
Work through problems with immediate feedback
A

Fluency Practice

1.

Compute [4−137]−[23−14]\begin{bmatrix}4 & -1\\3 & 7\end{bmatrix} - \begin{bmatrix}2 & 3\\-1 & 4\end{bmatrix}. What is the (2,1)(2,1) entry of the result?