Question

Descompuneti in factori:

x² - 6x + 8 =

Answer 1

[tex]x^2-6x+8= \\ Facem~artificiu~de~calcul: \\ Cauti~doua~numere~care~inmultite~sa~dea~8~si~adunate~-6. \\ (-4)*(-2)=8 \\ -4-2=-6 \\ Deci~numerele~sunt -2~si~-4. Acum~il~descompui~pe~-6x: \\ x^2-2x-4x+8= \\ Dai~factor~comun: \\ x(x-2)-4(x-2)=\boxed{(x-2)(x-4)}[/tex]