Question

Simplificati raportul x la patrat - 2x -15 supra x la patrat - 10x + 25 cu x-5 , unde x apartine lui R \ {5}

Answer 1

[tex]\frac{x^2-5x+3x-15}{(x-5)^2}=\\ \frac{x(x-5)+3(x-5)}{(x-5)^2}=\\ =\frac{(x-5)(x+3)}{(x-5)^2}=\frac{x+3}{x-5}[/tex]