Algebra of Matrics

[timid forge]

Why in the solution -11 is used where in the question its +11? (2.15 D)

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[cyan atlas]

typo probably

my guess is g is suppose to be x^2+2x-11 and the preamble has the typo

[timid forge]

you think so?

[cyan atlas]

yes...

im pretty confident typos are in deed a thing that exist

[cyan atlas]

and logic says 1 mistake vs an entire solution getting a mistake carried through is much more probable

[timid forge]

hmm you maybe right