Question

x la puterea a 2 minus 5 x plus 4 sa fie descompus in factori folosind artificiul de calcul

Answer 1

$x^2-5x+4=(x^2-4x+4)-x=(x+2)^2-x=[(x+2)-\sqrt{x} ][(x+2)+\sqrt{x]} =(x+2-\sqrt{x} )(x+2+\sqrt{x} )$