Question: Let A be a 2 à 2 matrix with a11 0 and let α = a21/a11. Show that A can be factored into a product

Let A be a 2 × 2 matrix with a11 ‰  0 and let α = a21/a11. Show that A can be factored into a product of the form
a12

What is the value of b?

a12

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