#2 X and Y are matrices of the Given this (X+2Y)² Same size. Given this, ea vals what?

Linear Algebra: A Modern Introduction
4th Edition
ISBN:9781285463247
Author:David Poole
Publisher:David Poole
Chapter3: Matrices
Section3.5: Subspaces, Basis, Dimension, And Rank
Problem 63EQ
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Some help with this algebra question please! I got X^2+4Y^2 but i'm unsure if that is correct, thanks. 

#2 X and Y are matrices of the
Given this (X+2Y)²
Same size. Given this,
ea vals what?
Transcribed Image Text:#2 X and Y are matrices of the Given this (X+2Y)² Same size. Given this, ea vals what?
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