descompuneti espresiile
x la a 2-2x+1
x la a 2+x-2


Răspuns :

[tex]x^2-2x+1=x^2-2\cdot x \cdot 1+1^2=(x-1)^2\\ x^2+x-2=x^2+2x-x-2=x(x+2)-(x+2)=(x+2)(x-1) [/tex]

[tex] {x}^{2} - 2x + 1 = (x - 1)^{2} [/tex]
[tex] {x}^{2} + x - 2[/tex]

[tex] {x}^{2} + 2x - x - 2 \\ x(x + 2) - (x + 2) \\ (x + 2)(x - 1)[/tex]