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Back to Add, subtract, and multiply matrices — Problem 4 · 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.

Let A=[2134]A = \begin{bmatrix}2 & 1\\3 & 4\end{bmatrix} and B=[102−1]B = \begin{bmatrix}1 & 0\\2 & -1\end{bmatrix}. Find the (1,1)(1,1) entry of ABAB.