Question

Descompune în factori
Ex2

Answer 1

[tex]a)\:x^2-3x+2=x^2-x-2x+2=x(x-1)-2(x-1)=\\=(x-1)(x-2)\\ b)\:2x^2-5x+2=2x^2-x-4x+2=x(2x-1)-2(2x-1)=\\=(2x-1)(x-2)\\ \\c)\:x^2-x+\frac{1}{4}=\frac{4x^2-4x+1}{4}=\frac{(2x-1)^2}{4}[/tex]