Answer :

[tex]x^2-9x+8=\\ x^2-x-8x+8=\\ x(x-1)-8(x-1)=\\ (x-8)(x-1)[/tex]
luana
[tex]x^2-9x+8=\\\\x^2-x-8x+8=\\\\x(x-1)-8(x-1)=\\\\(x-1)(x-8)[/tex]

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