Сократите дробь.
x^2 - 25
x^2 - 3x - 10
x^2-25 (x-5)(x+5) (x-5)(x+5) (x-5)(x+5) x+5 x^2-3x-10 = x^2+2x-5x-10 = x(x+2)-5(x+2) = (x-5)(x+2) = x+2